thumb|La Penitente by Pietro Rotari Penance is any act or a set of actions done out of contrition for sins committed, as well as an alternative name for the Catholic, Eastern Orthodox, and Oriental O
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 0x476493a2d5c4ed71a049508d2728fd1e6b07eba5c95c945b80068e433b953aca. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96c16d41-f386-4da7-8a23-899d4d33cd7b.json and https://artists.proofprofile.net/proofs/artist/96c16d41-f386-4da7-8a23-899d4d33cd7b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).