thumb|A silver talisman from the 6th or 7th century, inscribed with words similar to abracadabra Abracadabra is a magic word, historically used as an apotropaic incantation on amulets and common today
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 0x5cc730faf084eed1cb05e22a761e1e1c1d50fdbcc8f84526de3fd5ca783080c4. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12820b25-a191-4573-8484-aa86644ee939.json and https://artists.proofprofile.net/proofs/artist/12820b25-a191-4573-8484-aa86644ee939.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).