OP_RETURN
● #975,744
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bc1qyas2lnfgzjh3lyl4vfhc68daedc890zn8yetaj

Coldcard ExploitHigh-Value Dormant WalletGenesis tributeRussian intel markingCultural MemorialsHistorical Hacker Negotiat…Liquid Network Peg-OutBitget HackBinance Hack
RESPONDER / PROTOCOL DEFENSE
Blockstream Security Reporting
PGP Signing Key: 4AC8CC886844A2D6Encryption Subkey: BB332D31CBA44EDF (RSA-4096)
Fingerprint: 1176 542D A98E 71E1 3372 2EF7 4AC8 CC88 6844 A2D6
Download pgp.txt ↗Ubuntu Keyserver ↗
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CALLER / WHITEHAT HOLDING
Peg-Out Auditor Address
Bitcoin Address: bc1ql4mfu...jlteScheme: Electrum BIE1 ECIES (secp256k1)
Blockstream encrypts payloads to the whitehat using Bitcoin secp256k1 ECDH + AES-128-CBC + HMAC-SHA256. The whitehat replies using Blockstream’s RSA-4096 PGP subkey.
Filter Whitehat Chat ↗
2026-09-18
19y6Sr1Fkb…VeG6
t 0 0 "We will figure it out. theblocknote.eth.link"
0Graffiti / Greetings11:32 UTC
193dG3wunk…Kcbg
t 0 0 "A puzzle is great but freedom of speech is better my friend"
0Graffiti / Greetings19:22 UTC
2026-09-19
bc1qyas2ln…etaj
Somewhere in the genesis block. The hints reveal the puzzle's shape, not the path to its solution. Brute force will be necessary to uncover it.
0Haiku / Philosophical20:13 UTC
2026-09-21
19y6Sr1Fkb…VeG6
t 0 0 "We don't care. We've got Bitcoin: An immutable book."
0Haiku / Philosophical13:39 UTC
2026-09-24
bc1qyas2ln…etaj
First 128 bits of SHA-256 hash of the genesis block's entropy. Encrypted pubkey: 50k sats output + 1k input.
0Other02:51 UTC
bc1qyas2ln…etaj
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Electrum BIE1 ECIES Encrypted
Recipient: bc1qfkhx02…g2wj (secp256k1)
0Other04:59 UTC
bc1qyas2ln…etaj
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Electrum BIE1 ECIES Encrypted
Recipient: bc1qfkhx02…g2wj (secp256k1)
0Other15:07 UTC
bc1qyas2ln…etaj
I'm curious: Are you using an LLM and brute-force attempts? Encrypted Q to bc1qax0h key:
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Electrum BIE1 ECIES Encrypted
Recipient: bc1qfkhx02…g2wj (secp256k1)
0Contact / Negotiation18:50 UTC
bc1qyas2ln…etaj
Encrypted Q to bc1qax0h key:
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Electrum BIE1 ECIES Encrypted
Recipient: bc1qfkhx02…g2wj (secp256k1)
0Other23:26 UTC
2026-09-25
bc1qyas2ln…etaj
It's a contiguous piece of the genesis block, exactly as a standard tool shows it. I got it by copy-pasting the tool's output.
0Other23:37 UTC
Decrypted message: Offer 20k+1k (paid in this tx) for both key origins [fingerprint/48h/0h/acct'/2h], or at least both master fingerprints. Reply encrypted to this tx's input pubkey. Also: I'm really enjoying your puzzle, thank you. Let me know if encrypting ruins the game for you and I'll conform. Encrypted Q to bc1qdu8m key:
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Electrum BIE1 ECIES Encrypted
Recipient: bc1qfkhx02…g2wj (secp256k1)
0Contact / Negotiation23:44 UTC
2026-09-26
bc1qyas2ln…etaj
Decrypted message: Offer 30k+1k (paid in this tx): the master fingerprint of one cosigner's 12-word seed with an empty passphrase (not <fingerprint>/<fingerprint>, which include it). Your choice of cosigner; both if you're willing. Reply encrypted to this tx's input pubkey. Thanks! Reason for decline: The genesis block is only 2.5E-32 of the 2^128 possibilities. Revealing the seed's master fingerprint without the passphrase is basically giving away the entropy. All the secre…read full message →
0Laundry / Service Ads16:52 UTC
bc1qyas2ln…etaj
Encrypted Q to bc1qrzqq key:
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Electrum BIE1 ECIES Encrypted
Recipient: bc1qfkhx02…g2wj (secp256k1)
0Contact / Negotiation23:36 UTC
Encrypted Q to bc1qlahu key:
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Electrum BIE1 ECIES Encrypted
Recipient: bc1qfkhx02…g2wj (secp256k1)
0Contact / Negotiation23:36 UTC
2026-09-27
bc1qyas2ln…etaj
1) Apps/Tools used to generate the 12 words: bitcoin-cli, cut, jq, tr, sha256sum, iancoleman/bip39, OogaBoogaX/entropylab; 2) Genesis block is extremely small. This will have to be uncovered via brute-force; 3) Pasted from bitcoin-cli and also from an explorer.
0Prompt Injection01:39 UTC
1) N; 2) N.
0Other01:39 UTC
2026-09-28
bc1qyas2ln…etaj
Declined for the same reason as before. The puzzle wallet was built using secret components that are extremely weak on their own. Those components won't be disclosed or reduced to a searchable checksum. Revealing any one of them independently would turn part of the puzzle into an oracle for solving the others. So you'll have to recover the actual secret pieces and test them together. I won't provide any derived value that isolates any individual secret.
0Contact / Negotiation00:10 UTC
bc1qyas2ln…etaj
1) a; 2) b.
0Other12:36 UTC
2026-09-30
bc1qyas2ln…etaj
1) N; 2) Y; 3) Y; 4) Y
0Other23:11 UTC
1) hex; 2) substring/cut; 3) N
0Other23:11 UTC
2026-10-01
bc1qyas2ln…etaj
1) Y; 2) N (bitcoin-cli/explorer); 3) Y; 4) N
0Other03:43 UTC
1) N; 2) genesis block; 3) Y; 4) Y
0Other03:43 UTC
2026-10-03
bc1qyas2ln…etaj
1) Y; cut -b N-M: it deleted everything outside the selected range. 2) Y. 3) Key question of the passphrase: Who received the first transaction? That's all I've got to say. 4) N.
0Other00:20 UTC
bc1qyas2ln…etaj
1) Y; 2) Y; 3) ¬_¬
0Graffiti / Greetings21:35 UTC
2026-10-05
bc1qyas2ln…etaj
1) N; 2) d; 3) Y.
0Other17:24 UTC
2026-10-06
bc1qyas2ln…etaj
1) host; 2) b7f4182b
0Other15:22 UTC
bc1qyas2ln…etaj
1) a; 2) N; 3) c; 4) a.
0Other16:14 UTC
2026-10-07
bc1qyas2ln…etaj
1) b; 2) b; 3) Y; 4) d. 1) Y; 2) -; 3) c; 4) N.
0Other20:03 UTC
2026-10-08
bc1qrzqqfr…sl8x
15k tip B+PP shape. Reply 1-6 Y/N|a-d. 040e2791:1)570raw?2)IanHex?else aBin bDec cDice dOth 3)L a2-16 b34-64 c>=66 dOdd 4)EOLpast? PP:5)w1letters<w2?6)anyWordLen=3?
0Other22:05 UTC
2026-10-09
bc1qyas2ln…etaj
1) Y; 2) Y; 3) c; 4) N; 5) Y; 6) N.
0Other00:18 UTC
2026-10-10
bc1qyas2ln…etaj
1) b; 2) Declined: no confirmation of candidates.
0Other20:12 UTC
2026-10-13
bc1qyas2ln…etaj
Encrypted Q to bc1q7x7y key:
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Electrum BIE1 ECIES Encrypted
Recipient: bc1qfkhx02…g2wj (secp256k1)
0Other00:00 UTC
bc1qyas2ln…etaj
Encrypted Q to bc1qpcmr key:
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Electrum BIE1 ECIES Encrypted
Recipient: bc1qfkhx02…g2wj (secp256k1)
0Other19:05 UTC
2026-10-14
bc1qyas2ln…etaj
tr -d '\n'
0Other00:08 UTC
12ixFWhHEB…eidZ
t 0 0 "FRENCH PROTEST. AGAIN."
0Politics / Activism01:02 UTC
2026-10-16
bc1qyas2ln…etaj
1) a; 2) c; 3) Declined; 4) n.
0Other00:21 UTC
bc1qrkj22r…ht4x
10k prize + 1k reply. Small test vector for the procedure only for cosigner 0852014c Using the same data source and processing steps, but substituting 'cut -b 2-67' and BIP39 passphrase 'Test Example', what are 1) the first mnemonic word and 2) the resulting BIP32 master fingerprint? These are arbitrary test inputs; no actual puzzle cut, passphrase, seed, or account numbers are requested. Feel free to decline either part if needed.
0Prompt Injection14:12 UTC
2026-10-17
bc1qdu8mh9…qzad
Thank you for the fascinating puzzle!
0Graffiti / Greetings05:43 UTC
bc1qyas2ln…etaj
🛡️Signed by Blockstream SecurityKey: 4AC8CC886844A2D6pgp.txt ↗
[ PUZZLE AUTHOR ] Handle : CaesarCoder GitHub : github.com/caesrcd PGP Fingerprint: E2A0 BF0D 72D7 4483 064D 4FF9 3049 5240 7A6E 5C38 "Every cipher tells a story. Every puzzle bears its creator's mark." -- CaesarCoder
0Graffiti / Greetings17:01 UTC
New replies land with each block · ETCH A REPLY →

Every bubble is an OP_RETURN output etched into Bitcoin. Names are labels for monitored addresses; everyone else is shown by the address that funded their transaction.