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 0xaa798fc7cb2b6d587dded4afadf27e30338ffbc64dbfb68805c5534866cf6b80. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3188e4c6-0f92-4c71-8ddb-6c270afd742c.json and https://artists.proofprofile.net/proofs/artist/3188e4c6-0f92-4c71-8ddb-6c270afd742c.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 0xb08228f321076b9f0ebf3cb828e1b7e2177b4e9d5745cee9714fcfa86d45f2a6. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USND40800001.
Ahhhh Yeah!!! (feat. Faith R. Hardy-Molina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd7b91b100259ec60bfe28d6c2edd7cc9cf28b930c98a9b6ce6e47cae22159a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:36:39Z), 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/USND41000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2b85071c502a3c671882dbef149d8ad377950d7780b4f53c59c35087d90d63. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USND41600005.
I Don't Care What the Whiteman Say! (Santa Claus Is a Blackman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08779578946e07a922c1dcb43a8e232a52f8276b11561ca6bed1e9fbee485b6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USND41800003.
That's What I Do! (When I'm Making Sweet Love to You)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adb02419e8060111ab0c7011382a5674564241f20baafb4f25ad9f8aa5aa3bf. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USND42300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9b4c2cec4328a1f46df8172496181d61bc407070bad14ccabfeaf1cc2a321e. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:11:05Z), 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/USND42500004.