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 0x3797d84976646d734e1987adc4ed9da6c6e7168bf31bfbf248e61dc2437bfea0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/da3c54f8-79b7-48a0-bcc9-3c94e2964fe7.json and https://artists.proofprofile.net/proofs/artist/da3c54f8-79b7-48a0-bcc9-3c94e2964fe7.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 0xff81c84620b5eb20b2d3ff7a3356894dc13e8eee1c5e925134e7d9d10a2ed886. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SE5752206055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dc99fffd0a557c8aa65e268369fee9dad49a8676ed3ba8863c7156cd1c9c6d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE5752331140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4e60c9f2a95fc374b16f21775ed2b11d3c73bf1b824a3342c64126ea205de4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE6I32329277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b51288b4e2f60c0e63b9e27bd0f56c511dbb56e4143e6cb87aee69d86d187b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6I32354513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cf9fec87d9fb6bc66ad81a0d45db360c167fee7e956096364428fddc9daf01. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/SE6XY2323224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2efd4799982a191f5228cb6388abe4eb7db67b6389714a1a3373531b03d2ba. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE6XW2338383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1fdbc98ed56fde05f07502e697a1531314429a7684de486d66e71c96b5cf6d. 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/SE6XW2375418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e08437c60f37a89c591119d67ba752f3cefdc1f2c1455d470c73f335a599a1. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/SE62M2319204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8288d6d33d6a987c56930371a664d0c038d928827b2b24c253317a3a0bb6faf. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/SE6A92321409.
The Next Page (Full Velocity Official Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7f5da988ac0de014ee5ae8fd133137be37f48369008ea507ad6d3bb5fa24ff. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/SE5BU2400526.
Once Upon A Time (Full Velocity Anthem 2025)