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 0x12ab87d9a1ea5cdc29ca17ae87e33f3c49e895259907ff3ea7aedb1cba512534. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6190fc9-fb74-4f41-a0c2-f3bfc0a68e12.json and https://artists.proofprofile.net/proofs/artist/a6190fc9-fb74-4f41-a0c2-f3bfc0a68e12.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xf1c900762255885df6faf69c8d12036f055912ad641eee99fcd811bda7be9803. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:34:06Z), 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/USTCD1014269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd80fb31faf6a2f0abc41aeac84525d00c5294ce6b1547f633ff8cfdff6b101. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USTCD1014276.
The Return of Diva Blue: On Becoming a Woman Redux
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c23bb0dcac56ca281e4b9ce7aa576cc14c307fbea0d5f771c8e80bfa915727. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:54:02Z), 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/USTCD1014438.
Echoes of an Era Redux: My Father's Record Collection, Vol. 1
On Becoming a Woman... (20th Anniversary)