Someone hides a crypto wallet inside a puzzle, publishes the address, and dares the internet to solve it and keep what is in it. These are real, still unsolved, and the coins are sitting on-chain right now.
The biggest unsolved prizes on-chain right now. Regenerated from the manifests by tools/fig_readme_totals.py.
| Asset | Locked in unsolved puzzles | Approx. value |
|---|---|---|
| Bitcoin | 9.71 BTC | $612,000 |
| Ethereum | 13.21 ETH | $25,000 |
| Arweave | 1,900 AR | $3,400 |
| Stablecoins | 306 USDT + 0 USDC | $300 |
| Total | across 31 funded puzzles | $641,000 |
Checked 2026-08-16 at BTC $63,000, ETH $1,880, AR $1.81. Prices and balances move; verify each escrow yourself.
I am floflo777. I worked about 40 of these and solved a few (0.5 ETH and about 0.01 BTC). This is my research on the rest: for every puzzle, the address, the author's clues, what I tried, and where I got stuck. Pick one and keep going.
- Pick a tier below. Prizes are grouped by USD value at the snapshot date.
- Open the puzzle folder.
README.mdis the whole story: clues, mechanism, tested, leads. - Before any effort, re-check the escrow yourself: click the explorer link in "At a glance" or read docs/verify-funding.md. The chain is the truth, not this file.
analysis/tested.mdis what not to redo.analysis/leads.mdis where to start.- If you solve one: sweep first, then tell people. See CONTRIBUTING.md.
Point your agent (Claude Code, Codex, Cursor, or any other) at AGENTS.md. It
contains the rules and a starter prompt. The machine-readable index is
puzzles.json; each folder has a puzzle.json and, when the derivation is
known, tools/oracle.py --selftest.
The GPU and CPU bruteforce engines I use on these puzzles are in engines/: a
checksum-aware BIP39 seed and passphrase kernel (about 790k derivations/s), a brainwallet
SHA256 -> secp256k1 -> hash160 kernel (about 9.3M keys/s), an Electrum v1 old-seed engine,
and two Arweave key-stretch engines. They ship as CUDA source plus Python host drivers with
self-tests; build them with engines/build.sh (nvcc), then point one at a puzzle's target.
See engines/README.md.
If you do not know where to begin, these twelve are the clearest to pick up. The full list, grouped by prize, is in the tables below.
| Puzzle | Prize | Why it is a good place to start |
|---|---|---|
| Keir Finlow-Bates: book treasure hunt | 600,000 sats open, 4 lots solved | I solved 4 of its 12 lots; the write-ups show exactly how the author hides a key, which is the strongest lead for the 3 still open. |
| Corey Phillips: kitten passphrase | 0.01 BTC | The seed is fixed and public; only one BIP39 passphrase is missing. A clean, bounded target to point a tool at. |
| Keysa: Crack the Seed | 369,369 sats | Seventy words are printed on a card; twelve of them are the seed. The whole puzzle is picking the right twelve in the right order. |
| GSMG.io puzzle | up to 5 BTC | A famous multi-stage hunt; every stage but the last is solved. The final gate is two sealed AES blobs. |
| Guntis Vitolins MetaMask seed | 8.61 ETH | The largest prize here. A 12-word seed scattered across the author's own clues. |
| Ballet / Bobby Lee cards | 2 BTC | Two physical Ballet cards, 1 BTC each. Each needs one hidden half that was never photographed. |
| Aoi Nakamoto Quizchain | 0.854 BTC | The key comes from a Wattpad chapter run through MD5. The rule is certified on a solved sibling block. |
| BLM collage seed | 0.2 BTC | A whole seed hidden inside one large collage image: runes, micro-text, a clock. |
| Arweave Puzzle #11 | 1 ETH | A single grayscale sketch that encodes a raw 64-hex private key. |
| LogicBeach: Powerful Moss | 0.55 ETH | A 12-word seed spread across the 12 tracks of an album. The artist's two earlier hunts really paid out. |
| Smith, Lyle & Moore Hunt #2 | 0.032 BTC | A tree of password-locked web pages; each page you open hands you a fragment of the seed. |
| Bitcoin Movie Enigma | 100,000 sats | Thirty-four film stills become 24 words. Small prize, quick to check once you name the films. |
| Puzzle | Prize | USD | Chain | Type | What remains | Escrow checked | Status |
|---|---|---|---|---|---|---|---|
| GSMG.io Puzzle | 5.0068982 BTC | 315,435 | bitcoin | text-cipher, pixel-code, web-tree, raw-private-key | insight | 2026-08-16 | open |
| Ballet / Bobby Lee: Take Bobby's Bitcoin | 2.00007358 BTC | 126,005 | bitcoin | bip38, physical-object | external-info | 2026-08-16 | open |
| Bitaps Shamir Secret Sharing Challenge | 1.00016775 BTC | 63,011 | bitcoin | shamir, bip39-seed | external-info | 2026-08-16 | open |
| Aoi Nakamoto Quizchain | 0.777 BTC | 48,951 | bitcoin | bip39-seed, word-selection | external-info | 2026-08-21 | open |
| Peter Todd Hash Collision Bounties | 0.59364885 BTC | 37,400 | bitcoin | hash-collision | research-breakthrough | 2026-08-16 | watch |
| Guntis Vitolins: 10 ETH Challenge | 8.612541554256945 ETH | 16,192 | ethereum | bip39-seed, word-selection, video-series | bounded-compute | 2026-08-16 | open |
| BLM Collage: Welcome to the Brave New World | 20,107,284 sats | 12,668 | bitcoin | image-stego, word-selection, bip39-seed, text-cipher | insight | 2026-08-16 | open |
| Puzzle | Prize | USD | Chain | Type | What remains | Escrow checked | Status |
|---|---|---|---|---|---|---|---|
| TeikhosBounty: Johan Nygren's Proof-of-Public-Key Puzzles | 2.000006 ETH | 3,760 | ethereum | smart-contract, timelock | external-info | 2026-08-16 | open |
| Smith, Lyle & Moore Hunt #2: Glimmer | 0.031777 BTC | 2,002 | bitcoin | bip39-seed, password-pages, web-tree | insight | 2026-08-16 | open |
| Trithemius: Wealth in Poetry | 3,124,630 sats | 1,969 | bitcoin | bip39-seed, text-cipher, brainwallet | insight | 2026-08-16 | open |
| Arweave Puzzle #11 | 1 ETH | 1,880 | ethereum | image-stego, pixel-code, raw-private-key | insight | 2026-08-16 | open |
| Bountiful: the Fe compiler bug bounty | 1 ETH | 1,880 | ethereum | smart-contract, timelock | insight | 2026-08-17 | open |
| Arweave Puzzle #3 | 1,000.165838006237 AR | 1,810 | arweave | word-selection, text-cipher | insight | 2026-08-16 | open |
| LogicBeach: Powerful Moss | 0.55 ETH | 1,034 | base | image-stego, bip39-seed, word-selection, smart-contract | insight | 2026-08-16 | open |
| Arweave Puzzle #10 | 500.02225493 AR | 905 | arweave | word-selection, text-cipher | insight | 2026-08-16 | open |
| Arweave Puzzle Weave #12 | 400.00248121 AR | 724 | arweave | word-selection, geometry, text-cipher | insight | 2026-08-16 | open |
| Wonderabbit: Prometheus | 1,031,123 sats | 650 | bitcoin | bip39-seed, physical-object, text-cipher | external-info | 2026-08-16 | open |
| Corey Phillips: Kitten Passphrase Puzzle | 1,001,900 sats | 631 | bitcoin | bip39-seed, brainwallet | external-info | 2026-08-16 | open |
| RushWallet Contest #30 | 1,000,000 sats | 630 | bitcoin | brainwallet, audio | external-info | 2026-08-16 | open |
| School of Bitcoin: 1 Million Sats In This Image | 1,000,000 sats | 630 | bitcoin | bip39-seed, image-stego, password-pages | external-info | 2026-08-16 | open |
| AH White: Walking Banks | 800,000 sats | 504 | bitcoin | bip39-seed, book, text-cipher | external-info | 2026-08-16 | open |
| Keir Finlow-Bates: Move Over Brokers Treasure Hunt | 600,000 sats | 378 | bitcoin | book, brainwallet, text-cipher | human-action | 2026-08-16 | open |
| Zden Cryptopuzzle LVL.5 | 555,550 sats | 350 | bitcoin | geometry, raw-private-key | external-info | 2026-08-16 | open |
| FTPK Season 2: Never-Ending | 305.930218 USDT | 306 | ethereum | bip39-seed, word-selection | insight | 2026-08-16 | open |
| Andy Bauch: New Money, COG | 428,206 sats | 270 | bitcoin | pixel-code, physical-object | external-info | 2026-08-16 | open |
| Keysa: Crack the Seed Game | 369,369 sats | 233 | bitcoin | bip39-seed, word-selection | insight | 2026-08-16 | open |
| Zden Level HALV | 312,500 sats | 197 | bitcoin | geometry, raw-private-key | external-info | 2026-08-16 | open |
| Pindar Van Arman: cryptoArtGAN Act 1 Puzzle | 1 NFT | ethereum | bip39-seed, word-selection | insight | 2026-08-16 | open |
| Puzzle | Prize | USD | Chain | Type | What remains | Escrow checked | Status |
|---|---|---|---|---|---|---|---|
| Crypto Puzzles 2018: Puzzle #2 | 0.05 ETH | 94 | ethereum | raw-private-key, image-stego, video-series | external-info | 2026-08-16 | open |
| Bitcoin Movie Enigma | 100,000 sats | 63 | bitcoin | bip39-seed, text-cipher, word-selection | insight | 2026-08-16 | open |
| Exitonly Bitcoin Challenge 14 | 30,000 sats | 18.90 | bitcoin | bip39-seed, word-selection | uneconomic | 2026-08-16 | open |
| Puzzle | Cashed | Payout tx | Date | Series lesson |
|---|---|---|---|---|
| VeteranHODL: Hunting Time | 420000 sats | d3783a1cde2c491a6edfbead81aeebda90257c8c25b4b0c9b2bac89bc5cd607a | 2026-08-18 | solved by a reader after publication, not by me |
| FTPK Season 4: Something in Common | 181 USDC | 0x4c10674a4856cbba9b66543cc027a77e6b3a1ba458085f8fe680d588ffdd8f37 | 2026-08-20 | solved by a reader after publication, not by me |
| bc1q21 Time-Lock Challenge, Level 5 | 99604 sats | 73baf40f668fb221b6b9c934f199a51f7e0ab1f1bb585e07c18a7b3e88dfd7ed | 2026-07-24 | solved; the claim transaction confirms the answer |
| LuckyLurker Seed Riddles | 80000 sats | 75e570a5ea243c492e2804916482f046b2392b463c51be15624e6e25a84119f7 | 2026-08-17 | solved by a reader after publication, not by me |
| Dug's Student Treasure Hunt (2025 edition) | 59916 sats | ee70de514686588173b64fc31fc317ae15f1e903c742cc99140d2cf1bb2e8db1 | 2026-08-02 | solved; the payout transaction confirms the answer |
Puzzles that turned out swept, unfunded, custodial, or fake are kept off the lists above, in archive/dead-ends/, for anyone curious about the ones that did not pan out.
- Arweave puzzles: #3, #10, #11, #12 open; #8 solved by others is the oracle calibration.
- Zden (crypto.haluska.sk): LVL5 and HALV open; earlier levels solved by others.
- FTPK: seasons 2 and 4 open; seasons 1 and 3 finished and still playable, used to learn the author's grammar.
- Finlow-Bates "Blockchain book": 12 lots, 3 open, 4 solved by me, 5 by others.
- Aoi Nakamoto Quizchain: Real Big Block and Block 76 open; Block 77 Stage One reproduced.
Every address in this repository was checked within 30 days before publication; the date is
in each table and each puzzle.json. Prices and balances move. Run
python3 tools/check_escrows.py for a fresh table, or open the explorer links. If you find a
drift, open an issue with the txid.
Oracle first: reproduce a known-good vector before searching. A negative counts only with a witness. A solution is an exact match, character for character. Insight over compute: if a run needs hours, the constraint has not been found yet. Details: docs/methodology.md.
These are public puzzles. Each reward was funded and published by the puzzle's own author, who invited the public to solve it and take it. Nothing here targets a third party's wallet, lost keys, or private data. Solving one of these puzzles is what the author asked for. I do not guarantee that any escrow is still funded when you read this: check the chain. I am not affiliated with any puzzle author. Do not send funds to any address in this repository.
Text, data tables and illustrations I made: CC BY 4.0. Code under tools/ and
*/tools/: MIT. Puzzle images and short quotes remain the property of their
authors; they are reproduced as published because they are the challenge itself. Books,
audiobooks and articles are not reproduced; each folder links to where to find them.
X: @0xFlorent_. Issues on this repository for corrections, solves, and new leads.