Every release,
newest first.

Enhancements [ 15 ]

• datasetBreakingnegate withPubkey (#568)
• collectionsadd October deposits (#565)
• docsadd the registry MCP App (#551)
• verifyrebuild genesis keys (#549)
• verifyopen weave keyfiles (#548)
• collectionsBreakingadd genesis solve (#545)
• collectionslink pogo to PogoB (#542)
• collectionsadd crypto-puzzles (#540)
• collectionsadd 9vw04 (#537)
• rushwalletsolve wallet 26 (#536)
• collectionsadd weave riddles (#535)
• toolsadd ChatGPT @ mentions (#533)
• toolsfold long stage lists (#532)
• collectionsadd zden/demobit-2018 thread (#525)
• collectionsadd zden/level-xm17 thread (#524)

Performance [ 1 ]

• chainsskip chain classes (#567)

Fixes [ 5 ]

• collectionsglimmer solved (#564)
• queue every lazy import (#562)
• docsextend Docus once (#559)
• docsmake GITHUB_TOKEN optional (#541)
• collectionsfund bits/1 in 2015 (#538)

Refactors [ 4 ]

• write coin amounts in one spot (#531)
• move prize sums out of format (#530)
• lift extensions out (#527)
• rename core/utils to format (#526)

Documentation [ 1 ]

• run the docs script (#560)

Build [ 1 ]

• fold docs into the workspace (#563)

Chore [ 2 ]

• docsupdate Nuxt to 4.6.2 (#566)
• docsmove to Nuxt 4.6 (#534)

CI [ 1 ]

• release through uppt (#528)

Enhancements [ 18 ]

• Fold screenshot rows into their source (#480)
• docsOpen every puzzle file on the page (#483)
• Add MCP server description and icons (#484)
• collectionsAdd known public keys (#490)
• collectionsMark powerful-moss claimed (#493)
• collectionsAdd genesis October 7 reply (#495)
• Add liberte-guidant-le-peuple (#498)
• balanceBlockchair spare for Litecoin (#499)
• Build /mcp with toToolkitTools (#502)
• cliSwap plainWord() for plain (#503)
• collectionsAdd hunting-time (#504)
• Add .electrum() for Electrum seeds (#508)
• collectionsAdd phy October hint (#510)
• collectionsAdd zden/level-5 key and solver (#516)
• collectionsAdd quizchain2/77 key (#517)
• collectionsAdd zden/decred-autonomy claim (#518)
• collectionsAdd coin-games (#519)
• Fold long hint lists in puzzles show (#523)

Performance [ 1 ]

• balanceBench mempool.space on a miss (#488)

Fixes [ 5 ]

• Report a mistyped address as a typo (#485)
• errorsSkip the roster when a guess fits (#486)
• Point a collection key at its puzzles (#487)
• verifySkip entropy passphrase on Electrum (#509)
• Skip watch captures past the cutoff (#521)

Refactors [ 1 ]

• BreakingBuild the CLI with runCli (#494)

Documentation [ 1 ]

• Move AGENTS.md into the code and CONTRIBUTING.md (#520)

Chore [ 1 ]

• Drop the @agntn/tools type paths (#522)

Tests [ 3 ]

• Take the pass point from agntn/curves (#482)
• Clear the asset commit after each test (#492)
• Replace tautological assertions (#514)

Enhancements [ 6 ]

• toolsPoint file links at puzzles_assets (#470)
• collectionsAdd real-big-block (#473)
• collectionsAdd school-of-bitcoin (#475)
• collectionsAdd genesis October hints (#476)
• collectionsAdd walking-banks xpub (#477)
• toolsName eligibility carriers by path (#479)

Fixes [ 2 ]

• assetsLink the commit a checkout runs (#472)
• docsNever cache a missing chunk (#474)

Refactors [ 1 ]

• BreakingRename b1000 to bits (#478)

Enhancements [ 4 ]

• cliReplay a whole technique with verify (#460)
• Fold the dust in puzzles show (#461)
• toolsVerify every match in one call (#462)
• collectionsAdd smith-lyle-moore (#465)

Fixes [ 2 ]

• cliCut the 400 spaces off help lines (#459)
• assetsRead unreleased files from main (#466)

Enhancements [ 5 ]

• collectionsAdd grycoin (#451)
• Verify the recipe, not just the key (#452)
• collectionsAdd quizchain2/71 to 77 (#453)
• Give the Caesar shift a tag of its own (#456)
• Notice when a spend leaks the key (#457)

Performance [ 1 ]

• docsRedraw only the OG cards that change (#458)

Enhancements [ 5 ]

• collectionsAdd walking-banks (#440)
• toolsHand agents the puzzle files (#441)
• collectionsAdd phy (#442)
• collectionsAdd seed-phrase (#444)
• cliRead watch histories past 100 (#450)

Fixes [ 1 ]

• releaseLeave the changelog to changelogen (#445)

Enhancements [ 4 ]

• collectionsMark weave/12 claimed (#435)
• collectionsAdd genesis replies to cut -b (#436)
• collectionsAdd quizchain2/61 to 70 (#438)
• collectionsAdd move-over-brokers (#439)

Fixes [ 1 ]

• docsRemote MCP reads no arguments as {} (#437)

Chore [ 1 ]

• Apply automated updates (d917afe)

Enhancements [ 1 ]

• collectionsAdd quizchain2/51 to 60 (#425)

Fixes [ 2 ]

• Record the deposits watch still reports (#426)
• docsSanitize keys the remote MCP echoes (#433)

Refactors [ 1 ]

• collectionsBreakingArweave becomes weave (#432)

Chore [ 2 ]

• releaseV0.27.2 (9009b36)
• releaseV0.27.2 (d644674)

Enhancements [ 5 ]

• Tag records with techniques (#415)
• docsShow techniques in the dossiers (#416)
• collectionsAdd satoshi-maze (#418)
• collectionsAdd natasha-otomoski (#419)
• collectionsAdd quizchain2/41 to 50 (#420)

Fixes [ 2 ]

• docsFit author dossiers on a phone (#417)
• collectionsMatch prizes to balances (#421)

Enhancements [ 2 ]

• Build an eligibility record (#413)
• collectionsAdd quizchain2/31 to 40 (#414)

Chore [ 1 ]

• Apply automated updates (48f7dea)

Enhancements [ 5 ]

• cliWatch chain and source changes (#405)
• collectionsAdd the gsmg deposits (#406)
• puzzleBreakingBuild every record with puzzle() (#410)
• collectionsAdd quizchain2/21 to 30 (#411)
• collectionsAdd great-riddle (#412)

Fixes [ 1 ]

• cliFlag watch histories cut at 100 (#409)

Enhancements [ 5 ]

• collectionsAdd quizchain2/11 to 20 (#398)
• collectionsAdd the 2026 bitaps deposit (#399)
• collectionsAdd gsmg phase 3.2 stages (#400)
• puzzlePin asset bytes with SHA-256 (#401)
• collectionsPin author URLs of 28 assets (#403)

Chore [ 1 ]

• Apply automated updates (3ac2e7c)

Enhancements [ 2 ]

• balanceRead Dogecoin through Blockchair (#386)
• collectionsAdd quizchain2 (#388)

Fixes [ 1 ]

• Serialize overlapping lazy imports (#384)

Refactors [ 1 ]

• toolsBreakingDeclare each tool once (#381)

Enhancements [ 1 ]

• collectionsAdd trivia-brainwallet (#377)

Fixes [ 1 ]

• docsName bitcoinCashPuzzle in the record (#375)

Build [ 1 ]

• Bundle with obuild again (#378)

Chore [ 1 ]

• Apply automated updates (70043c2)

Tests [ 1 ]

• packedIgnore the checkout path (#379)

Enhancements [ 9 ]

• chainsAdd eCash (#358)
• collectionsAdd proof-of-writing (#359)
• collectionsGenesis toolchain replies (#360)
• collectionsAdd bitaddress (#366)
• chainsDogecoin records and key checks (#369)
• collectionsAdd doges-gambit (#370)
• chainsBase records and balances (#371)
• puzzlePrizes that wait in an escrow (#372)
• collectionsAdd powerful-moss (#373)

Fixes [ 2 ]

• docsCount hints of open puzzles (#363)
• depsMake typebox a host peer (#367)

Chore [ 1 ]

• BreakingRequire Node.js 26 (#356)

Tests [ 1 ]

• Hash with agntn/hashes instead of noble (#364)

Enhancements [ 4 ]

• docsFilter the collections index (#335)
• docsServe the puzzle tools over MCP (#336)
• balanceEthereum without an Etherscan key (#348)
• collectionsAdd path-to-greatness (#351)

Performance [ 1 ]

• utilsSkip the ICU load on import (#350)

Fixes [ 8 ]

• toolsReject arguments a tool does not take (#339)
• cliFail on flags a command does not take (#340)
• cliNo color codes in piped help (#341)
• docsRemote MCP rejects unknown arguments (#343)
• mcpName the allowed values in schema errors (#345)
• toolsSay which filter hid an address (#347)
• errorsSuggest each puzzle named 71 (#349)
• collectionsBrave-new-world hash160 (#354)

Chore [ 1 ]

• Apply automated updates (6e219ec)

Tests [ 1 ]

• One 30 s timeout for the whole suite (#342)

Enhancements [ 16 ]

• solversOne record and page per solver (#297)
• collectionsLink AoiNakamoto's X account (#298)
• partsAdd stages (#299)
• collectionsAdd quizchain/9 (#301)
• collectionsAdd quizchain/10 (#302)
• cliCheck balances of a filtered set (#304)
• chainsSupport Bitcoin Cash (#305)
• collectionsAdd mini (#306)
• collectionsAdd teikhos (#308)
• balanceBlockstream fallback for Bitcoin (#312)
• collectionsBreakingAll seven mini-puzzles (#318)
• collectionsAdd brave_new_world (#321)
• collectionsAdd wealth-in-poetry (#325)
• docsChangelog page with an RSS feed (#326)
• collectionsGenesis hints to September 26 (#330)
• collectionsAdd quizchain/11 to 77 (#331)

Fixes [ 8 ]

• cliMatch show to puzzles_show (#311)
• datasetKeep every digit in prize totals (#314)
• toolsName the coin in puzzles_balance (#315)
• collectionsGsmg without unsourced claims (#317)
• docsIndent plain text code blocks (#319)
• cliSay 1 puzzle, not 1 puzzles (#320)
• docsWrap long hint text in the hint log (#329)
• assetsPin links to the release tag (#332)

Refactors [ 3 ]

• collectionsBreakingKebab-case identifiers (#323)
• collectionsBreakingGenesis as a singleton (#327)
• collectionsBreakingKtimesg becomes 80-bit (#328)

Documentation [ 2 ]

• Keep singleton and author counts live (#333)
• Point DESIGN.md at the agntn design system (#334)

Build [ 1 ]

• Ship no source maps (#300)

Chore [ 1 ]

• Apply automated updates (910bd11)

Tests [ 1 ]

• packedWrite the load report to a file (#310)

Enhancements [ 19 ]

• collectionsArchive quizchain blocks 2 to 5 (#265)
• docsSortable rosters on UTable (#267)
• errorsDid you mean b1000/135? (#268)
• collectionsAdd ktimesg (#271)
• collectionsIamabananaamaa GIF puzzle (#273)
• docsLanding roster of collections (#274)
• collectionsWickex YouTube puzzle (#275)
• docsVerify console on the landing (#277)
• collectionsAdd iamabananaamaa/caesar (#279)
• cliServe mcp from src inside a checkout (#281)
• docsRecord file on the console shell (#283)
• collectionsAdd picture_puzzle (#284)
• collectionsAdd quizchain/6 (#287)
• collectionsAdd quizchain/7 (#289)
• docsLanding registry as a manifest map (#290)
• collectionsAdd quizchain/8 (#291)
• docsCustom collection panel in two files (#293)
• registryType built-in collection lookups (#295)
• docsOne design system across the site (#296)

Fixes [ 3 ]

• toolsReject an empty collection filter (#280)
• collectionsAoiNakamoto asked r/Bitcoin (#282)
• partsMark keys rebuilt from a recipe (#294)

Refactors [ 2 ]

• datasetDrop @noble/hashes (#269)
• verifyBreakingRename verifyPuzzle to verify (#288)

Chore [ 1 ]

• Apply automated updates (515377e)

Tests [ 1 ]

• fixturesGive the refresh tests 30 s (#286)

Enhancements [ 5 ]

• collectionsZden/level_5 claimed (#254)
• docsPuzzle lists join the instruments (#255)
• collectionsAdd quizchain/4 (#258)
• collectionsAdd quizchain/5 (#260)
• docsOne dossier per puzzle page (#262)

Performance [ 1 ]

• verifyBreakingLoad keys on the first verification (#259)

Fixes [ 1 ]

• collectionsZden/demobit_2018 has no capture (#253)

Documentation [ 2 ]

• Pin example results to the dataset (#256)
• Counts come from the library (#261)

Build [ 1 ]

• Lint, test and pack through Vite+ (#252)

Enhancements [ 9 ]

• docsPlayground on the dossier instruments (#238)
• cliPage a long list (#239)
• collectionsAdd book_quiz (#241)
• docsThe playground runs the author tools (#242)
• collectionsArchive the satoshi_birthday_quiz thread (#243)
• collectionsAdd quizchain (#246)
• docsCollection pages open on a dossier (#247)
• collectionsAdd quizchain/2 (#250)
• collectionsAdd quizchain/3 (#251)

Fixes [ 1 ]

• toolsDust prints as 1e-8 (#244)

Documentation [ 2 ]

• The skill follows the hint contract (#245)
• Skills ask the tools and ship with the package (#248)

Enhancements [ 8 ]

• collectionsCredit Level 4's winner (#224)
• collectionsCodex key from Zden (#225)
• toolsBrowse puzzles without repeats (#227)
• datasetList the puzzles of one chain (#228)
• datasetLook a puzzle up by its address (#230)
• collectionsAdd mineshop (#231)
• collectionsAdd satoshi_birthday_quiz (#236)
• authorsSourced records, one page each (#237)

Fixes [ 3 ]

• balance18 decimals outrun a double (#229)
• errorsA miss names what does exist (#232)
• toolsOverlapping imports lose the dataset (#234)

Documentation [ 1 ]

• Preserve the cited source tweets (#226)

Enhancements [ 4 ]

• collectionsTORCHED H34R7S painting (#215)
• docsGive tool results a compact panel (#216)
• collectionsWhite paper wallet key (#219)
• collectionsMovie Enigma's original rules (#222)

Fixes [ 4 ]

• toolsSay what each list status means (#217)
• toolsA missing id was loading keys (#218)
• registryRetain loader registrations (#220)
• verifyHex must not change a WIF verdict (#221)

Chore [ 1 ]

• Apply automated updates (2369ec1)

Enhancements [ 4 ]

• collectionsDug's student treasure hunt (#204)
• collectionsGenesis wallet and its hints (#206)
• docsRefresh landing fixtures (#211)
• collectionsRushWallet's missing video hint (#214)

Performance [ 1 ]

• toolsSpeed up discovery and stats (#213)

Refactors [ 1 ]

• puzzleBreakingReserve solver for people (#203)

Enhancements [ 3 ]

• collectionsDecred Autonomy puzzle (#197)
• collectionsJanus 33*bbb hint (#199)
• collectionsLuckyLurker vaults and hints (#202)

Fixes [ 3 ]

• datasetKeep export hashes consistent (#195)
• verifySkip unsupported address kinds (#196)
• collections1bitcoin claim was 777 sats (#201)

Documentation [ 1 ]

• Pin prose counts to the registry (#200)

Enhancements [ 6 ]

• docsCollection pages list their hints (#186)
• collectionsZden/level_5 hints (#187)
• cliAdd a hints command (#188)
• collectionsZden hints the author published (#189)
• collectionsZden solver images (#192)
• collectionsAdd ledger_donjon (#193)

Fixes [ 3 ]

• datasetCollection rows count every status (#190)
• toolsHints report the hint assets too (#191)
• datasetHandle non-string puzzle ids (#194)

Enhancements [ 3 ]

• collectionsAdd movie_enigma (#178)
• puzzleRecord hints and what confirms them (#183)
• collectionsB1000 carries its author's hint (#185)

Fixes [ 9 ]

• toolsShow the whole record in puzzles_show (#162)
• chainsCheck txids through @agntn/chains (#163)
• cliPrint domain errors as one line (#164)
• partsMake the Key builder immutable (#166)
• puzzleFreeze the record a factory builds (#170)
• datasetMemoized views refuse a rewrite (#173)
• collectionResolve only canonical queries (#176)
• cliKeep the verify crypto out of --help (#179)
• toolsLink the hints and the solver asset (#180)

Refactors [ 1 ]

• verifyLet @agntn/keys derive addresses (#165)

Chore [ 2 ]

• Add renovate.json (9a47cd9)
• Remove CLAUDE.md (da6bde5)

CI [ 1 ]

• publishInstall the docs before pnpm test (#161)

Heads-up [ 7 ]

• Package is @agntn/puzzles, binary is puzzles
• Node.js 24 or newer
• Fields became methods
• get(), stats(), all() are async. A single collection import stays sync
• Collections live at @agntn/puzzles/collections/<key>
• CLI lost author, search, range, YAML/CSV and --open. --json is the machine format now
• Errors are PuzzlesError, not BohaError

Features [ 2 ]

• rushwalletAdd 30 RushWallet brainwallet contest puzzles (#152)
• b1000Change 135 to solved (#159)

Features [ 1 ]

• warpBackfill keys + passphrases + KDF salt + schema fixes (#153)

Documentation [ 1 ]

• Fix README and skill drift (#151)

Miscellaneous Tasks [ 2 ]

• cliRemove unused #[allow(dead_code)] annotations
• releaseV0.18.1

New collection [ 2 ]

• warp: 6 WarpWallet challenges with full blockchain data — txids, pubkeys, hash160, dates (#149)
• New Status::Expired variant for puzzles whose funds were reclaimed after a deadline (#149)

Data model [ 3 ]

• currency field on Puzzle for non-native token prizes, with currency() accessor that falls back to chain symbol (#143)
• Stats keyed by currency string instead of Chain enum (#143)
• weave9 puzzle: 100 DAI on Ethereum with full Etherscan transaction data (#145)

Balance fetching [ 3 ]

• Arweave balance via arweave.net/wallet/{address}/balance (#144)
• Decred balance via dcrdata totals endpoint (#140)
• Litecoin balance via litecoinspace.org mempool-compatible API (#127)

Search & CLI [ 4 ]

• Chain symbols (BTC, LTC, XMR, DCR) now searchable (#142)
• Currency field included in search results (#146)
• --case-sensitive searches all fields correctly (#139)
• boha list rejects unknown collection names instead of silently dumping everything (#137)

Verification [ 2 ]

• BIP39 passphrase passed to seed derivation — puzzles with known passphrases now verify correctly (#147)
• Required (unknown) passphrases return UnverifiableKey instead of guessing empty string (#147)

Architecture [ 5 ]

• Centralized collection dispatch registry — one place to wire in new collections (#141)
• Chain::address_explorer_url and Puzzle::explorer_url for address links (#129)
• hash_collision::solved() iterator for consistency with other collections (#126)
• Mixed-case hex accepted in Chain::is_valid_txid (#125)
• PUZZLES.len() replaces hardcoded counts in hash_collision and zden (#124)

Quality [ 3 ]

• Clippy pedantic + nursery lints enabled with clippy.toml and [lints.clippy] config (#135)
• Agent skills for library and CLI usage (#133)
• Test coverage for Chain methods, is_valid_txid formats (#130, #128)

What's New [ 11 ]

• Cryptographic verification with per-chain dispatch (#123)
• Litecoin balance fetching via mempool.space (#127)
• Chain::address_explorer_url and Puzzle::explorer_url (#129)
• Display and FromStr for Chain and Status enums (#122)
• hash_collision::solved() iterator (#126)
• Agent skills for AI coding assistants (#133)
• Mixed-case hex now accepted in Chain::is_valid_txid (#125)
• PUZZLES.len() replaces hardcoded count (#124)
• Ballet collection supported in author CLI command (#120)
• Strict clippy config: deny all warnings, warn on pedantic and nursery lints (#135)
• Related tools section: added vusi and kangaroo

Testing [ 4 ]

• Chain methods: explorer URLs, symbol, name, ALL constant (#130)
• Chain::is_valid_txid across all chain formats (#128)
• format_duration_human_readable edge cases
• i32 IntoPuzzleNum edge cases (#121)

What's New [ 3 ]

• arweave collection: 11 Tiamat/Chronobot puzzles with AR and ETH prizes (#111)
• Chain::ALL constant and centralized txid validation (#109)
• zden puzzle names normalized to snake_case (#114)

What's New [ 8 ]

• All collections migrated from TOML to JSONC with JSON Schema validation (#101)
• boha search - find puzzles by status, chain, collection, bits (#94)
• boha verify - validate puzzle data integrity (#98)
• boha export - JSON/CSV output formats (#106)
• Data version embedded at build time (#97)
• Public key validation for claimed puzzles (#103)
• Scripts migrated to JSONC with unified typed address structs (#104, #108)
• Standardized README badges and community section

What's New [ 3 ]

• WIF validation runs at build time, catching key mismatches early (#93)
• zden Level 1 (#81), Level 2 (#85), and Level 3 (#87) private keys added
• key field renamed to value with inline TOML tables for cleaner data files (#83)

What's New [ 3 ]

• ballet collection: 3 physical crypto wallet cards, BIP38 encrypted keys (#76)
• WIF (Wallet Import Format) added to 82 solved puzzles via new generate_wif.rs script (#79)
• README version now auto-updates during release

What's new [ 3 ]

• Asset support for puzzle collections
• retired_coder solver profile
• Related Tools section in docs (vuke, vgen)

What's new [ 9 ]

• Address struct with chain, kind, hash160, witness_program
• Key struct with hex, wif, seed (BIP39), bits, shares (SSSS)
• SegWit (P2WPKH/P2WSH) and Taproot (P2TR) address types
• Ethereum balance API support via Etherscan
• Decred API support in scripts
• bitimage puzzle collection (2 puzzles, file-derived keys)
• bitaps mnemonic challenge data
• human-panic for friendly CLI crash reports
• Solvers extracted to dedicated TOML file (solvers.toml)

Migration notes [ 2 ]

• Address and Key are now structs, not plain strings. Access the raw value via .value and .hex respectively.
• Solver data is now referenced by ID. If you were parsing puzzle files directly, solver definitions moved to solvers.toml.

What's new [ 2 ]

• zden collection with 15 visual crypto puzzles
• Full timestamp precision on all date fields

What's new [ 5 ]

• Solver struct with name, addresses, and profiles for solved puzzles
• claim_txid() accessors with block explorer URL generation
• Pubkey to hash160 validation tests
• Private key to address derivation verification tests
• Balance feature test coverage

What's new [ 2 ]

• transactions field on Puzzle struct with full tx history
• Transaction data compiled at build time from JSONC sources

What's new [ 4 ]

• KeySource enum for key derivation semantics
• Author struct with name, addresses, and profile links
• Updated AGENTS.md with code map and testing documentation
• Added DeepWiki badge to README

Highlights [ 2 ]

• `solve_time` field (#32): How long it took from puzzle creation to solution. For solved puzzles, this is the raw duration data that makes leaderboards and difficulty analysis possible.
• Generalized `key_range` (#30): Previously rigid, now flexible enough to express the actual search space for different puzzle types. Not every puzzle has a neat power-of-two range.

Highlights [ 4 ]

• `h160` field for P2PKH (#17): Raw HASH160 values for legacy addresses. Lets you verify address derivation without pulling in a base58 decoder.
• `script_hash` for P2SH (#22): The actual script hash behind P2SH addresses. Essential for hash_collision collection puzzles where the script structure is the whole point.
• `btc` renamed to `prize` (#25): The old field name assumed Bitcoin, but not all bounties pay in BTC. prize is chain-agnostic and accurate.
• autofix.ci integration (#23): Automatic formatting via CI. No more formatting commits cluttering the history.

Highlights [ 2 ]

• `Chain` enum (#15): Replaces raw strings with a proper enum. Prepares the library for collections beyond Bitcoin.
• `pubkey_format` field (#16): Tracks whether a puzzle uses compressed or uncompressed public keys. This matters for address derivation and solving strategy.

Highlights [ 1 ]

• GSMG puzzle collection (#10): Added the GSMG (Give Satoshi Money Game) puzzle. A single high-profile challenge that has been standing for a while. Third collection in the library alongside b1000 and hash_collision.

Highlights [ 2 ]

• `source_url` field (#8): Links back to the original source where each puzzle was published. Now you can trace any puzzle to its origin.
• `start_date` field (#7): When the puzzle or bounty was first created. Useful for tracking how long puzzles have been standing unsolved.

Highlights [ 5 ]

• b1000 collection: All 256 Bitcoin puzzles from the 32 BTC challenge. Private keys live in known ranges [2^(N-1), 2^N - 1], making this a brute-force playground.
• hash_collision collection: Peter Todd's P2SH bounties for finding hash function collisions. Real money on the line for breaking SHA1, RIPEMD160, and friends.
• Build-time TOML codegen: Puzzle data lives in TOML files, gets compiled into &'static Rust structs via build.rs. No runtime parsing, no heap allocation.
• CLI with 4 commands: stats, list, show, balance behind the cli feature flag. Balance fetching (mempool.space API) behind the balance flag.
• Puzzle struct: 16 fields covering addresses, keys, status, funding sources, and metadata.