Evidence layer
Sources & Research Index
A deduplicated, searchable catalogue of the material actually cited by all 33 articles and the BIP index.
This catalogue brings together citations that previously lived only at the end of individual articles. You can trace each source by domain and by the articles that use it. Adding a citation to an article or BIP automatically updates this page and its machine-readable API. Inclusion is not an endorsement of an entire source; the catalogue contains official documents, technical specifications, research, statistics, and reporting.
- sources
- 194
- domains
- 82
- articles
- 33
- BIP originals
- 19
Showing 194 of 194
arxiv.org1
- Eyal & Sirer (2013) — Majority is not Enough: Bitcoin Mining is Vulnerable
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bis.org4
- Bank for International Settlements (BIS)Cited by:Bitcoin Economics
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- BIS Annual Economic Report 2018, Chapter V: Cryptocurrencies — looking beyond the hypeCited by:Criticisms of Bitcoin
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- BIS Bulletin No 69: Crypto shocks and retail losses (2023-02-20)Cited by:Criticisms of Bitcoin
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- BIS Papers No 159 — 2024 BIS survey on CBDCs and crypto (22 August 2025)
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bitcoin.org7
- bitcoin.org
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- bitcoin.org — Getting started (ways to obtain bitcoin and what to know first)
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- bitcoin.org — Secure Your WalletCited by:Wallets & SecurityWhy Lost Bitcoin Cannot Be Recovered — Irreversibility ExplainedIs Bitcoin Safe? What Is Protected and What Is Not
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- bitcoin.org — Running a Full Node (storage required for initial sync)
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- bitcoin.org — Some Things You Need to Know (transactions cannot be reversed)
- Bitcoin WhitepaperCited by:History of BitcoinHow Blockchain WorksWho is Satoshi Nakamoto?The Bitcoin Whitepaper, Section by SectionHow Mining WorksBitcoin EconomicsWhy Lost Bitcoin Cannot Be Recovered — Irreversibility ExplainedIs Bitcoin Safe? What Is Protected and What Is NotBitcoin's Controlled SupplySending Bitcoin — From Receiving an Address to Confirming ArrivalTransactions Deep DiveRunning a Bitcoin Node — Verifying for YourselfBitcoin Paradoxes — Contradictions Between Ideal and Reality
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- The Bitcoin Whitepaper — Japanese translation PDF (bitcoin.org)
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bitcoincore.org9
- Bitcoin CoreCited by:What is the Halving?
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- Bitcoin Core — CSV soft fork activation notice (July 4, 2016, block 419,328)Cited by:Forks & Chain Divergence
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- Bitcoin Core — Disclosure of CVE-2018-17144 (20 September 2018)Cited by:Is Bitcoin Safe? What Is Protected and What Is NotBitcoin Vulnerabilities — Attack Vectors and Real BugsBitcoin Paradoxes — Contradictions Between Ideal and Reality
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- Bitcoin Core — Security Advisories / disclosure policy (formalized July 2024)Cited by:Is Bitcoin Safe? What Is Protected and What Is NotBitcoin Vulnerabilities — Attack Vectors and Real Bugs
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- Bitcoin Core — Releases
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- Bitcoin Core 0.11.0 release notes (block file pruning introduced, 2015-07)
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- Bitcoin Core 28.0 release notes (full-RBF by default, 1-parent-1-child package relay, October 2024)
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- Bitcoin Core 29.0 release notes (removal of -mempoolfullrbf; full-RBF becomes standard, April 2025)Cited by:Why Lost Bitcoin Cannot Be Recovered — Irreversibility ExplainedSending Bitcoin — From Receiving an Address to Confirming ArrivalTransactions Deep Dive
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- Bitcoin Core 30.0 Release NotesCited by:Bitcoin Glossary & Script PrimerOrdinals, Inscriptions & RunesBitcoin Paradoxes — Contradictions Between Ideal and Reality
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bitcoinstrings.com1
- bitcoinstrings.com (Blockchain Embedded Message Archive)Cited by:How Blockchain Works
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bitcointreasuries.net1
- BitcoinTreasuries.net — holdings by ETFs, public companies, governments, and private companies (retrieved August 16, 2026)
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bitslog.com1
- Sergio Demian Lerner — The Well Deserved Fortune of Satoshi Nakamoto (Patoshi analysis)Cited by:Who is Satoshi Nakamoto?
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bitvm.org1
- BitVM Whitepaper (Robin Linus)Cited by:Layer 2 & Scaling
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blockchain.com1
- Blockchain.com — Blockchain Size chart (excludes database indexes)
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blockstream.com1
- Blockstream — Liquid NetworkCited by:Layer 2 & Scaling
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blog.coinkite.com1
- Coinkite — Coldcard Mk3 seed generation warning (published July 30, 2026)
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blog.wasabiwallet.io1
- zkSNACKs — Discontinuing the CoinJoin Coordination Service (effective June 1, 2024)Cited by:Privacy & Anonymity
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boj.or.jp1
- Bank of Japan — Central Bank Digital Currency (CBDC) initiatives
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btcmap.org2
- BTC Map — Dashboard (public statistics on listings and verification)
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- BTC Map — Country page (Japan; swap the country code in the URL for the U.S. "us" or El Salvador "sv")
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bundesfinanzministerium.de1
- German Federal Ministry of Finance — Government draft of the 2027 federal budget (July 6, 2026, German)
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bybit.com1
- Bybit — security incident timeline (official)Cited by:Incidents & Turning Points
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caa.go.jp1
- Consumer Affairs Agency — Consumer Hotline (188)
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caselaw.nationalarchives.gov.uk1
- The National Archives, Find Case Law — COPA v Wright [2025] EWHC 1139 (Ch)Cited by:Who is Satoshi Nakamoto?
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ccaf.io2
- Cambridge Bitcoin Electricity Consumption Index (CBECI)Cited by:How Mining Works
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- Cambridge Bitcoin Electricity Consumption Index (CBECI) — daily-updated electricity indexCited by:Criticisms of Bitcoin
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chainalysis.com2
- Chainalysis — 2026 Crypto Crime ReportCited by:Bitcoin Myths & Facts
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- Chainalysis — Estimate of lost bitcoin (November 2017)Cited by:Bitcoin's Controlled Supply
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coinatmradar.com1
- Coin ATM Radar — Bitcoin ATM installation trendCited by:Bitcoin Economics
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coindesk.com1
- CoinDesk — Coldcard fallout: roughly 210,000 BTC leaves long-term holder wallets (August 7, 2026)
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coingecko.com2
- CoinGecko — Bitcoin historical price dataCited by:What is the Halving?
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- CoinGecko — crypto market capitalisation and Bitcoin dominanceCited by:Bitcoin Economics
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congress.gov1
- U.S. Congress — H.R.3633 (CLARITY Act, 119th Congress)Cited by:Regulation — Japan & the World
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corporate.coincheck.com1
- Coincheck — Notice of discontinuation of the bitcoin payment service "Coincheck Payment"
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courts.go.jp1
- Courts in Japan — Petition for Renunciation of Inheritance
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cryptoslate.com1
- CryptoSlate — Custody concentration across spot Bitcoin ETF assets, compiled from SEC filings and AUM (as of April 8, 2026)
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deloitte.com1
- Deloitte — Quantum computers and the Bitcoin blockchain (estimate of quantum-vulnerable UTXOs, c. 2019–2020)
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developer.bitcoin.org4
- Bitcoin Developer Guide — Block ChainCited by:How Blockchain Works
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- Bitcoin Developer Guide — MiningCited by:How Mining Works
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- Bitcoin Developer Guide — WalletsCited by:Wallets & Security
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- Bitcoin Developer Reference (bitcoin.org)Cited by:Bitcoin Glossary & Script PrimerSending Bitcoin — From Receiving an Address to Confirming ArrivalTransactions Deep Dive
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digiconomist.net1
- Digiconomist — Bitcoin Energy Consumption IndexCited by:Criticisms of Bitcoin
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docs.babylonlabs.io2
- Babylon Labs — EOTS Manager (extractable one-time signatures)Cited by:Layer 2 & Scaling
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- Babylon Labs DocumentationCited by:Layer 2 & Scaling
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docs.ordinals.com3
- Ordinals Handbook — InscriptionsCited by:Ordinals, Inscriptions & Runes
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- Ordinals Handbook — RunesCited by:Ordinals, Inscriptions & Runes
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- Ordinals Handbook — Runes specification (name character set and spacers)Cited by:Ordinals, Inscriptions & Runes
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docs.stacks.co1
- Stacks Documentation — sBTC FAQCited by:Layer 2 & Scaling
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domo-2.gitbook.io1
- BRC-20 Original Proposal (Domo)Cited by:Ordinals, Inscriptions & Runes
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ecb.europa.eu2
- ECB Blog: Bitcoin's last stand (Bindseil & Schaaf, 2022-11-30)Cited by:Criticisms of Bitcoin
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- European Central Bank — Digital euro
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en.bitcoin.it6
- Bitcoin Wiki — Controlled supply
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- Bitcoin Wiki — Value overflow incident (the 2010 overflow bug)Cited by:Is Bitcoin Safe? What Is Protected and What Is NotBitcoin Vulnerabilities — Attack Vectors and Real Bugs
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- Bitcoin Wiki — Genesis BlockCited by:History of Bitcoin
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- Bitcoin Wiki — Irreversible Transactions (attacks on zero-conf)Cited by:Bitcoin Glossary & Script Primer
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- Bitcoin Wiki — PrivacyCited by:Privacy & Anonymity
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- Bitcoin Wiki — ScriptCited by:Bitcoin Glossary & Script Primer
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ethereum.org1
- ethereum.org — The Merge (move to proof-of-stake and energy use)
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eur-lex.europa.eu1
- EUR-Lex — MiCA (Regulation (EU) 2023/1114)Cited by:Regulation — Japan & the World
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everycrsreport.com1
- Congressional Research Service — Bitcoin ETP Approval ReportCited by:History of Bitcoin
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fatf-gafi.org1
- FATF — Financial Action Task Force (Travel Rule / virtual assets)Cited by:Regulation — Japan & the World
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fsa.go.jp13
- Japan FSA — Information for users of crypto-assetsCited by:How Bitcoin Compares — Assets and Money, NeutrallyAcquiring and Disposing of Bitcoin — How It Works, Neutrally
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- FSA — List of Registered Crypto-Asset Exchange Service Providers (as of June 30, 2026)Cited by:Acquiring and Disposing of Bitcoin — How It Works, NeutrallyBitcoin Scams — Tactics and How to Protect YourselfIs Bitcoin Safe? What Is Protected and What Is Not
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- FSA — Explanatory Material on the Bill Amending the FIEA and the Payment Services Act (PDF, Japanese)Cited by:Regulation — Japan & the WorldBitcoin Taxes in Japan — Misc Income, the 2026 Reform, and Tax FilingRunning a Bitcoin Node — Verifying for Yourself
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- Financial Services Agency (Japan) — Beware of Fraudulent Investment Solicitations ("we will recover your losses" pitches; consolidated search for regulated financial businesses)
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- JFSA — Publication of the Cabinet Office Ordinance amending the ordinance on electronic payment instruments service providersCited by:Bitcoin Glossary & Script Primer
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- Japan FSA — Amendments implementing the crypto travel rule (in force June 1, 2023)Cited by:Privacy & Anonymity
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- FSA — Names of those conducting unregistered crypto-asset exchange business (domestic)
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- Japan FSA — Deposit insurance system (payoff)
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- FSA — Promulgation of the Cabinet Order under the 2025 Payment Services Act Amendment and Results of Public Comment (in force June 1, 2026)
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- Japan FSACited by:Incidents & Turning Points
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- Japan FSA
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- Financial Services Agency — Counselling Office for Financial Services Users (0570-016811, weekdays 10:00–17:00)
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- Financial Services Agency — Promulgation of the Cabinet Order for the 2026 FIEA amendment provisions taking effect 20 days after promulgation (29 July 2026)
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github.com36
- BIP 110 — Reduced Data Temporary Softfork (mandatory signaling 961,632–963,647; threshold 1,109 of 2,016)
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- BIP 141 — Segregated Witness (defines the 4,000,000 block weight limit)BIP summary in this library:BIP 141
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- BIP 143 — Transaction Signature Verification for Version 0 Witness ProgramBIP summary in this library:BIP 143
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- BIP 144 — Segregated Witness (Peer Services)BIP summary in this library:BIP 144
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- BIP 34 — Block v2, Height in CoinbaseBIP summary in this library:BIP 34
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- BIP 340 — Schnorr Signatures for secp256k1BIP summary in this library:BIP 340
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- BIP 341 — Taproot: SegWit version 1 spending rules (Schnorr signatures)Cited by:The Bitcoin Whitepaper, Section by SectionPrivacy & AnonymityOrdinals, Inscriptions & RunesBIP summary in this library:BIP 341
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- BIP 342 — Validation of Taproot ScriptsBIP summary in this library:BIP 342
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- BIP 49 — Derivation scheme for P2WPKH-nested-in-P2SH based accountsBIP summary in this library:BIP 49
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- BIP 54 — Consensus Cleanup (proposed fix for time-warp and others; Status: Complete)
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- BIP 8 — Version bits with lock-in by heightBIP summary in this library:BIP 8
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- BIP 84 — Derivation scheme for P2WPKH based accountsBIP summary in this library:BIP 84
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- BIP 86 — Key Derivation for Single Key P2TR OutputsBIP summary in this library:BIP 86
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- BIP 9 — Version bits with timeout and delayBIP summary in this library:BIP 9
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- BIP-0030 (Duplicate Coinbase Transactions)Cited by:Bitcoin's Controlled Supply
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- BIP-0050 (record of the March 2013 chain fork)
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- BIP-0327 (MuSig2 — Schnorr key aggregation)Cited by:Privacy & Anonymity
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- BIP-0352 (Silent Payments)Cited by:Privacy & Anonymity
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- BIP-125 — Opt-in Full Replace-by-Fee (RBF signalling)BIP summary in this library:BIP 125
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- BIP-148 — UASF (Mandatory SegWit Activation)Cited by:Forks & Chain Divergence
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- BIP-157 (Client Side Block Filtering Protocol)
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- BIP-173 — Bech32 address format (bc1q; substitution errors up to 4 characters, plus the later insertion/deletion disclosure)Cited by:Why Lost Bitcoin Cannot Be Recovered — Irreversibility ExplainedSending Bitcoin — From Receiving an Address to Confirming ArrivalBIP summary in this library:BIP 173
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- BIP-174 (Partially Signed Bitcoin Transaction Format / PSBT)
- BIP-21 — the bitcoin: URI scheme (the format embedded in payment QR codes)
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- BIP-32 (Hierarchical Deterministic Wallets)
- BIP-350 — Bech32m (bc1p addresses for witness version 1 and above, including Taproot)Cited by:Why Lost Bitcoin Cannot Be Recovered — Irreversibility ExplainedSending Bitcoin — From Receiving an Address to Confirming ArrivalTransactions Deep DiveBIP summary in this library:BIP 350
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- BIP-360 — Pay-to-Merkle-Root (post-quantum output type, Draft)
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- BIP-380 (Output Script Descriptors)Cited by:Wallets & Security
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- BIP-39 (Mnemonic Seed Phrase Spec)
- BIP-44 (Multi-Account Hierarchy for Deterministic Wallets)
- Bitcoin BIPs RepositoryCited by:Forks & Chain Divergence
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- Bitcoin Core Developer Documentation — assumeutxo design
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- Jameson Lopp — Known Physical Bitcoin Attacks (public list of coercion cases; the author notes it is not exhaustive)Cited by:Is Bitcoin Safe? What Is Protected and What Is NotBitcoin Vulnerabilities — Attack Vectors and Real Bugs
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- Lightning Labs — Taproot Assets releases (feature additions by version)Cited by:Lightning Network Primer
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- Commit a30b56e introducing MAX_BLOCK_SIZE = 1000000 (2010-07-15)
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- SLIP-0039 — Shamir's Secret-Sharing for Mnemonic Codes
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gold.org1
- World Gold Council — How much gold has been mined? (above-ground stock and central bank holdings)
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help.blockstream.com1
- Blockstream Help Center — How the Liquid Federation's multisig works (11-of-15)Cited by:Layer 2 & Scaling
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imf.org1
- IMF — Press Release No. 25/043 (40-month, ~US$1.4bn EFF for El Salvador approved February 26, 2025)
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irs.gov2
- U.S. Internal Revenue Service — Digital Assets
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- IRS — Samourai Wallet Founders Sentencing AnnouncementCited by:Incidents & Turning Points
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ishares.com1
- BlackRock iShares Bitcoin Trust (IBIT)
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japaneselawtranslation.go.jp1
- Cabinet Office Order on Crypto-Asset Exchange Service Providers (Japanese Law Translation Database)
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jbs.cam.ac.uk4
- Cambridge CCAF — Digital Mining Industry Report (April 2025)
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- Cambridge Centre for Alternative Finance — crypto-asset benchmarking (user-count methodology)Cited by:Bitcoin Economics
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- Cambridge Digital Mining Industry Report (CCAF, 2025-04) — 138 TWh / 39.8 MtCO2e / 52.4%Cited by:Criticisms of Bitcoin
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- Cambridge Judge Business School — Digital Mining Industry ReportCited by:Bitcoin Myths & Facts
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jftc.go.jp1
- Japan Fair Trade Commission — Study report on credit card transactions (8 April 2022, with a link to the report itself)
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jipf.or.jp1
- Japan Investor Protection Fund — About the Fund (¥10 million cap)
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judiciary.uk3
- COPA v Wright form of order judgment [2024] EWHC 1809 (Ch), 16 July 2024 (PDF)Cited by:Who is Satoshi Nakamoto?
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- COPA v Wright full judgment [2024] EWHC 1198 (Ch), 20 May 2024 (PDF)
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- UK Judiciary — COPA v Wright judgment pageCited by:Who is Satoshi Nakamoto?
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justice.gov3
- U.S. DOJ — Roman Storm Conviction AnnouncementCited by:Privacy & Anonymity
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- U.S. DOJ — Samourai Wallet Founders Sentenced (November 2025)Cited by:Privacy & Anonymity
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- U.S. DOJ — Samourai Wallet Founders ChargedCited by:Privacy & Anonymity
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jvcea.or.jp1
- JVCEA — Notice on Travel Rule Compliance
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kokkai.ndl.go.jp1
kokusen.go.jp2
- National Consumer Affairs Center of Japan — Consultations concerning crypto-assetsCited by:Why Lost Bitcoin Cannot Be Recovered — Irreversibility ExplainedBitcoin Scams — Tactics and How to Protect YourselfIs Bitcoin Safe? What Is Protected and What Is Not
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- National Consumer Affairs Center of Japan — Warning: calls, emails and postcards impersonating the Center
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laws.e-gov.go.jp1
- e-Gov Law Search — Payment Services Act (Act No. 59 of 2009, Japanese)Cited by:Regulation — Japan & the World
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ledger.com1
- Ledger — Addressing the July 2020 e-commerce and marketing data breach (≈1M emails / ≈9,500 detailed records)
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legislation.gov.uk1
- legislation.gov.uk — The Financial Services and Markets Act 2000 (Cryptoassets) Regulations 2026 (SI 2026/102)Cited by:Regulation — Japan & the World
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lightning.network1
- The Bitcoin Lightning Network Whitepaper (Poon & Dryja; first draft 2015, revised 2016)
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mainnet.observer1
- mainnet.observer — share of transactions spending SegWit inputsCited by:Transactions Deep Dive
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mempool.space3
- mempool.space — Lightning Network StatisticsCited by:Lightning Network Primer
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- mempool.space — Measured hash rate, mining pools and fees
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- mempool.space — block subsidy, issued supply, halving countdownCited by:Bitcoin EconomicsPaying with Bitcoin — The State of PaymentsSending Bitcoin — From Receiving an Address to Confirming Arrival
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metzdowd.com1
- Original post to the cryptography mailing list, "Bitcoin P2P e-cash paper" (2008-10-31)
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mof.go.jp2
- Ministry of Finance — Bills in the 221st Diet (Act Partially Amending the Income Tax Act and Others, with outline)
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- Ministry of Finance — FY2026 Tax Reform Outline (Cabinet decision, December 26, 2025)
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moj.go.jp1
- Ministry of Justice — Storage System for Handwritten Wills
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mtgox.com1
- Mt.Gox Civil Rehabilitation Official Site (Trustee)Cited by:Incidents & Turning Points
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nber.org2
- Alvarez, Argente & Van Patten, "Are Cryptocurrencies Currencies? Bitcoin as Legal Tender in El Salvador" (NBER WP 29968)
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- Makarov & Schoar, "Blockchain Analysis of the Bitcoin Market" (NBER WP 29396 — miner concentration and the counter-cyclical 51% attack risk)Cited by:Bitcoin Vulnerabilities — Attack Vectors and Real BugsCriticisms of BitcoinBitcoin Paradoxes — Contradictions Between Ideal and Reality
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npa.go.jp5
- National Police Agency JAFIC — Act on Prevention of Transfer of Criminal Proceeds, Order and Regulations
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- National Police Agency JAFIC — Outline of the Act on Prevention of Transfer of Criminal Proceeds (as of 24 June 2025, reflecting the amended verification methods)
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- National Police Agency (Japan), SOS47 — SNS-based investment and romance fraud, 2025 provisional figures (published February 13, 2026)
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- National Police Agency — Police Consultation Line #9110
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- National Police Agency — Recognized and Cleared Cases of Telephone Fraud and Social-Media Investment/Romance Fraud, 2025 (confirmed figures, 22 May 2026)Cited by:Bitcoin Scams — Tactics and How to Protect YourselfIs Bitcoin Safe? What Is Protected and What Is Not
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nta.go.jp9
- NTA — Q&A on the Special Defense Income Tax and the Special Reconstruction Income Tax (May 2026)
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- NTA — Tax Treatment of Crypto Assets (Information), December 2025 edition (FAQ PDF)
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- National Tax Agency — Tax Treatment of Crypto Assets and Calculation SheetsCited by:Acquiring and Disposing of Bitcoin — How It Works, NeutrallyBitcoin Inheritance and Estate PlanningPaying with Bitcoin — The State of PaymentsSending Bitcoin — From Receiving an Address to Confirming ArrivalBitcoin Taxes in Japan — Misc Income, the 2026 Reform, and Tax Filing
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- NTA — Automatic Exchange of Information under the Crypto-Asset Reporting Framework (CARF) portal
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- Japan National Tax Agency — Separate self-assessment taxation on transfers of listed shares etc.
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- NTA Tax Answer No.1900 — Salaried Individuals Who Must File a Return
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- NTA Tax Answer No.3267 — Adding Inheritance Tax to the Cost Basis of Transferred Inherited Property
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- NTA Tax Answer No.4205 — Filing and Paying Inheritance Tax
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- NTA Tax Answer No.4214 — Inheritance Tax Payment in Kind (ranking of eligible property)
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patents.google.com1
- US Patent 4,309,569 (Ralph Merkle, Merkle Tree)Cited by:How Blockchain Works
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prnewswire.com1
- FTX Recovery Trust — press release on the fifth distribution (2026-07-31)Cited by:Incidents & Turning Points
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protos.com1
- Protos — Bitcoin node counters go dark following Bitnodes expiry (May 2026)
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research.google1
- Google Research — Quantum Vulnerability Disclosure
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river.com1
sangiin.go.jp1
- House of Councillors — Bill record: Act for Partial Revision of the Financial Instruments and Exchange Act and the Payment Services Act (221st Diet, Cabinet Bill No. 57; promulgated 23 July 2026 as Act No. 64)Cited by:Bitcoin Scams — Tactics and How to Protect YourselfRegulation — Japan & the WorldBitcoin Taxes in Japan — Misc Income, the 2026 Reform, and Tax Filing
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satoshi.nakamotoinstitute.org3
- Satoshi Nakamoto Institute — "Bitcoin v0.1 released" announcement email (2009-01-08)Cited by:History of Bitcoin
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- Satoshi Nakamoto Institute (Forum Post Archive, 543 posts)Cited by:Who is Satoshi Nakamoto?
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- Satoshi Nakamoto Institute (Email Archive)
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sec.gov4
- SEC / CFTC Joint Interpretive Release No. 33-11412 (March 17, 2026; five categories including digital collectibles)Cited by:Ordinals, Inscriptions & Runes
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- Strategy Inc — Form 8-K (June 29, 2026, BTC Monetization Program)
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- U.S. SEC
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- U.S. SEC EDGAR — iShares Bitcoin Trust ETF Form 10-Q (period ended June 30, 2026; 734,261 BTC held)
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sophos.com1
- Secureworks (now Sophos) — BGP Hijacking for Cryptocurrency Profit (the 2014 case)
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squareup.com2
- Square Support — Accept and manage bitcoin payments (default settlement, fees, limits, eligibility)
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- Square (Block) press release — Block to roll out bitcoin payments on Square (May 27, 2025; expected to reach all eligible sellers in 2026)
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tether.io1
- Tether — Lightning Network Integration AnnouncementCited by:Lightning Network Primer
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theblock.co1
- The Block — BTC 30-Day Annualized Volatility
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whitehouse.gov2
- The White House
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- The White House — Establishment of the Strategic Bitcoin ReserveCited by:Incidents & Turning PointsRegulation — Japan & the WorldBitcoin Paradoxes — Contradictions Between Ideal and Reality
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The date is the fact-check date of a citing article or the BIP metadata check. It is not a continuing audit of the external page as a whole.