thumb | right | alt=Emperor Claudius (reigned 41–54) | Emperor Claudius (reigned 41–54) Claudio is an Italian and Spanish first name. In Portuguese, it is accented Cláudio. In Catalan and Occitan, it
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 0x4c9c61af51f8310c0d82380bb1bba534c3c332e1581c5bdd66a4433c571c3989. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a2ecf35-07a0-41c7-b326-cb77cbdfd799.json and https://artists.proofprofile.net/proofs/artist/0a2ecf35-07a0-41c7-b326-cb77cbdfd799.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).