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 0x5ba4b1faeb442813e317e53e1a325c1c44e58295eab8c293ea8f5d9b57c4499f. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/899d5b58-8795-4fdb-a7d6-17c724ea239a.json and https://artists.proofprofile.net/proofs/artist/899d5b58-8795-4fdb-a7d6-17c724ea239a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Surrender / Gimme a Break / Stick Up / Thank You, Thank you / Caught Up In the Act / Situations
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95357bdbfa6723f8cc537d30a988f2aed31503a0978edffb7f1fdf0473dc5eff. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUQ0L2407079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d148024f862a49d752d08e8243714e41e67e20b991767643a217890b06d1c90. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUQ0L2407080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccb9cd808d864f0040c1354704a79c8495b9d597fc461076ada19d5fd3b0242. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:34:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAC482400245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f971b3d2841e9d7c6dde47f48fc6a3391b43b89c01688e5aacb2e507f2cda64. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAC482500065.