Crionics was a Polish blackened death metal band from Kraków, formed in 1997 by Michał Skotniczny, Dariusz Styczeń, "Marcotic" and Maciej Zięba. In their early years they played fast and melodic metal
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e52943bcc36d9a000ccedb255a5ac2a98acf35b93ac14fa984b0ab8f4138c2e. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9da5ab32-fa14-4b8e-a2d0-7b0fc66a72a3.json and https://artists.proofprofile.net/proofs/artist/9da5ab32-fa14-4b8e-a2d0-7b0fc66a72a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).