thumb | right | alt=Carla Voltolina Pertini | Carla Voltolina Pertini, Italian journalist Carla is the feminized version of Carl, Carlos or Charles, from ceorl in Old English, which means "free man".
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 0xef528db2ebeb483ca3397b400e9bfedbc5e7da221069fd2b055e1b494654cd45. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7566604b-9fa0-4f1a-b0b8-510b81fabb85.json and https://artists.proofprofile.net/proofs/artist/7566604b-9fa0-4f1a-b0b8-510b81fabb85.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).