UTXO

On March 6, 2025, Executive Order 14233 turned a decade of forfeited Bitcoin, from Silk Road to the Bitfinex hack, into a U.S. Strategic Bitcoin Reserve; the Prince Group case followed in October.

No supply cap, a fee burn that can push issuance negative, and a 2022 switch from mining to staking — Ethereum's own design documents, read against Bitcoin's fixed 21 million.

Stefan Thomas was paid 7,002 BTC in 2011 for a Bitcoin explainer video, stored the keys on a 10-attempt IronKey, and lost the password. By the 2021 NYT report, 2 of 10 attempts remain.

James Howells says he bagged the wrong hard drive in a 2013 clear-out, and it went to a Newport, Wales landfill with his early bitcoin keys. In January 2025 the High Court threw out his £495M claim.

Cross-cutting reading of iconic Bitcoin losses by mechanism: forgotten password (Thomas), physical disposal (Howells), custody-collapse (QuadrigaCX, Mt. Gox, FTX). Tied to Bitcoin's irreversibility.

An anonymous plaintiff sues 39,069 dormant Bitcoin addresses holding ~3.8M BTC under New York's lost-property statute (March 2026). Galaxy Digital ties 21,923 of them to the Patoshi pattern.

Cross-cutting architecture comparison across every subsystem: Satoshi's v0.1 (January 2009) side by side with modern Bitcoin Core v27+, with split diagrams and domain tables.

How the Bitcoin ecosystem layers above and around the base chain: Lightning payment channels, federated sidechains, L1 envelope extensions, and mining pool architectures.

Bitcoin's threat model mapped end-to-end: what the protocol trusts, what it defends against, how each attack is countered, and where open risks remain.

How Bitcoin Core persists blocks, maintains the UTXO set, indexes chain state, manages the mempool, prunes historical data, and bootstraps via assumeUTXO.

How Bitcoin Core manages keys, constructs transactions, selects coins, estimates fees, and exposes functionality through RPC, REST, and ZMQ interfaces.

How Bitcoin uses elliptic-curve keys, digital signatures, hash functions, and deterministic derivation to secure ownership without trusted third parties.

How Bitcoin's 21 million cap emerges from a geometric halving series, how block rewards transition from subsidy to fees, and how the incentive model sustains honest mining.

How Bitcoin nodes find each other, exchange transactions and blocks, and resist network-level attacks across the P2P gossip layer.

How Bitcoin nodes agree on a single chain: SHA-256d proof of work, the difficulty adjustment algorithm, block validation rules, fork resolution, and probabilistic finality.

How Bitcoin blocks are structured, how Merkle trees commit transactions to block headers, and how the most-work chain selection rule resolves forks.

Deep-dive into Bitcoin's transaction layer: UTXO lifecycle, transaction structure, Script evaluation, ECDSA and Schnorr signatures, SegWit, and Taproot.

High-level system overview of Bitcoin's architecture, layer model, and data flow. Entry point to a 12-page design-document series covering every major subsystem.

Start here if you know nothing about Bitcoin beyond the price. A five-part guide to what a bitcoin is, who keeps the record, how new coins appear, and why no one can cheat it.

Which Bitcoin assets are at risk from a cryptographically relevant quantum computer, and what the timeline and migration debate around post-quantum cryptography looks like.

Genealogy of every Bitcoin protocol fork that left a separate chain alive (Bitcoin Cash, SV, Gold) and the adjacent cryptocurrencies derived from Bitcoin (Namecoin, Litecoin, Dogecoin).

He built RPOW, received the first Bitcoin transaction, and lived blocks from Dorian Satoshi Nakamoto. The evidence for Hal Finney as Satoshi, weighed.

He conceived Bit Gold, and three of the four most-cited stylometric studies place him first. The evidence for Nick Szabo as Satoshi, weighed.

Adam Back announces Hashcash to the Cypherpunks list — a proof-of-work postage scheme against spam, framed within the digital-cash discourse as a stop-gap or fallback for digicash.

Adam Back replies to Wei Dai on Cypherpunks, identifying seven monetary-design issues in b-money and proposing Hashcash as the minting mechanism — a substantive analysis ten years before Bitcoin.

Bitcoin v0.1 reuses one cypherpunk primitive (PoW from Hashcash), borrows general CS components (Merkle trees, linked timestamping, ECDSA), and synthesizes the rest (UTXO, mining, 21M cap, P2P).

Hashcash's inventor and the first person Satoshi contacted. In April 2026 the NYT named him the closest stylometric match among 620 cryptography-mailing-list writers. The evidence, weighed.

Technical analysis of Bitcoin's genesis block from v0.1 source: hardcode auto-construction, the five-day gap as timestamp artifact, two-layer authorship reading, PoW headroom, key possession.

Bitcoin's first block contains a Times bank-bailout headline — Satoshi's only personal voice inside the design, etched in the system's most permanent place. A reading of why he chose it.