01Active · funded·Bitcoin
Oobit 12 Words
A 12-word image and video hunt with a published BIP44 derivation path and a fully funded wallet.
PRIZE1,545,000 sats + 10,000 CBMnemonic · image + video
SIGNALBest reward-to-structureThe platform also shows 10,000 CB, but the Bitcoin address separately holds 1,545,000 real satoshis.
84
02Active · funded·Bitcoin
The Last Backup
A fresh layered trail involving an image, metadata, audio and a valid-checksum recovery phrase.
PRIZE10,000 sats + 50,196 CBSteganography · audio
SIGNALBest technical fitCreator comments indicate sequential layers. Eight optional hints exist, but are paywalled in CB.
78
03Funded · dormant·Bitcoin
24,206-sat Bitcoin Image Puzzle
Bounded clues combine Java hashCode, rotated words, book identification and a known first word.
PRIZE24,206 satsImage · BIP39 · book clue
SIGNALCompact but dormantSmall payout, but a compact and testable clue set makes it useful for validating a solving workflow.
72
04Active · deadline Aug 30·Base
LaborMarketV2 · Job #3
A creator-authorized escrow challenge with a specific prize job and a short remaining deadline.
PRIZE100 USDCAuthorized smart-contract CTF
SIGNALTime-sensitive, scoped CTFScope is strictly Job #3. The contract contains unrelated jobs and funds that are outside the challenge.
70
05Active · funded·Bitcoin
Sound Money
Twelve retro music videos each hide at least one word; the ordered mnemonic also needs a passphrase.
PRIZE1,000,000 satsMnemonic · twelve videos
SIGNALComplete public releaseAll twelve videos were released at Bitcoin block 963000. The passphrase mechanism remains the main ambiguity.
69
06Active · permanent·Bitcoin / Ordinals
PatoshiWorld Permanent Hunt
A PlayCanvas and Ordinals game hides seed words alongside a decoder in its world and assets.
PRIZE675,000 satsGame · hidden seed + decoder
SIGNALGood after asset captureDesigned as a permanent hunt. A complete source and asset inventory should come before candidate testing.
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07Active · funded·Pepecoin PEP
PEP Puzzle 6 · Wallet 2
One image contains four independent solutions; only the second wallet remains open.
PRIZE25,000 PEPSingle-image private-key puzzle
SIGNALLow-stakes practiceNative Pepecoin, not Ethereum PEPE. The prize is small and illiquid but the target is compact.
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08Active · intact UTXO·Bitcoin
Genesis Block 2-of-2
Two signing keys independently derive from the same Genesis-block field without hashing.
PRIZE125,779 satsOn-chain multisig derivation
SIGNALFunded, underdeterminedObvious nonce, timestamp, bits, endian, merkle, hash and headline-slice constructions were already tested.
63
09Active · rules confirmed·Litecoin
Path to Greatness Litecoin Treasure
Ten images contain riddles and logic clues leading to a single Litecoin private key.
PRIZE3.02608794 LTCTen-image private-key hunt
SIGNALComplete visual corpusThe rules state that the hunt continues until the address is emptied. Public progress is unclear.
60
10Active · funded·Bitcoin
Phy Challenge
Altered Bitcoin-paper text, corrected Base64, PGP material and a 2048² emoji image form one system.
PRIZE800,000 satsImage · PGP · phyllotaxis
SIGNALCoherent but difficultThe creator says there are no loose ends and no hashing. Prior public attempts are extensive.
58
11Funded · dormant·Ethereum
Confuzzled
Sixteen pixel-art and grid scenes encode a private key or mnemonic through an unknown visual grammar.
PRIZE0.0333 ETHVisual private-key puzzle
SIGNALDormant, high interpretation riskAll scenes are public. The creator rated it 6/10, but there is no strong semantic hint.
52
12Active · access needed·eCash
Cain’s Chronicles
A Cashtab seed is hidden in a paid article; public hints include Revelation 22:13.
PRIZE30,068,000.94 XECArticle-hidden mnemonic
SIGNALGood only with source textProceed only with lawfully unlocked article text. The creator says it is intended as a human-solvable hunt.
50
13Active · access needed·Cardano
Pudgy Cat Cardano Legacy · W1/W2
Two funded seeds remain hidden across illustrated haiku books using text, layout, art or metadata.
PRIZE102.628254 ADA + PUDGY per walletIllustrated-book seed hunt
SIGNALBook-gatedW3 was claimed. W1 and W2 require lawful access to the full-resolution books.
46
14Funded · dormant·Bitcoin
Lauda Memorial Puzzle
Reconstruct a Nullian brainwallet from information published on-chain and in the original thread.
PRIZE2,220,000 satsOn-chain brainwallet riddle
SIGNALLong-running dormant puzzleFive years unsolved. The creator says ordinary hardware is enough and brute force will not help.
45
15Incomplete · monitor·Bitcoin
The Great Print / Great Bitcoin Riddle
Twenty-four recovery words are being released across artworks; only a fraction are public.
PRIZE421,417 satsArtwork recovery-word hunt
SIGNALNot solvable yet by designTrack each release, but defer serious solving until more of the 24-word corpus exists.
34
16Incomplete · monitor·Bitcoin
Discofish / D7F
A slowly released sequence of roughly fourteen clues, some of which may require physical access.
PRIZE29,195 sats across two walletsSlow-drip seed hunt
SIGNALMost clues unreleasedOne earlier wallet was already swept. Monitor the official clue page rather than guessing ahead.
30
17Funded · deprioritized·Ethereum
52 Bricks
Sixty-five colored wall states imply 64 transitions, but the intended mapping remains unknown.
PRIZE0.01 ETHVisual private-key puzzle
SIGNALExhausted obvious mappingsTracked because the prize remains, but a large deterministic pass produced no hit. Do not spend more compute without a new clue.
22
18Funded · deprioritized·Bitcoin
seed-phrase.com
BIP39 indices, imagery, ciphertext and derivation-path clues form a dense web puzzle.
PRIZE1,000,000 satsWeb steganography puzzle
SIGNALAttempted, no decisive pathStill tracked as funded, but deprioritized after a clue and asset pass failed to produce a bounded model.
20
19Funded · deprioritized·Ethereum
Cipher in Circles
Seventy one-second 6×6 scenes expose several color and ring channels but no confirmed cipher grammar.
PRIZE0.02 ETHVisual private-key puzzle
SIGNALAttempted, semantics unknownRetained for status tracking only. Resume if the creator releases a new hint or a strong semantic model appears.
18
20Needs verification · deadline conflict·Bitcoin / Quantum
BlueQubit Quantum Advantage Challenge
Five peaked quantum-circuit problems reveal five pieces of a 256-bit private key.
PRIZE0.25 BTCResearch CTF
SIGNALEligibility unclearThe wallet remains funded, but BlueQubit advertised a December 9, 2025 deadline. Keep off the confirmed-active list pending clarification.
16