Renee Klapmeyer, Ryan Ward, Darryl Winslow and Recording Cast
{"copyright_id":"0xa668950edab1e4aa98913a4c111d1c272ee8f7bdc0556b28b39b423aa77e34f9","name":"Renee Klapmeyer, Ryan Ward, Darryl Winslow and Recording Cast","registered_at":"2026-06-21T17:58:49Z","symbol":"NIM1992701","token_address":"0x13dc54c1015c0ab89f5f4a7eb0f7073e3e9c39a4","type":"artist","uuid":"fdc299b8-2d48-4da1-9c97-d0567a4b8d80"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa668950edab1e4aa98913a4c111d1c272ee8f7bdc0556b28b39b423aa77e34f9. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdc299b8-2d48-4da1-9c97-d0567a4b8d80.json and https://artists.proofprofile.net/proofs/artist/fdc299b8-2d48-4da1-9c97-d0567a4b8d80.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).