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 0x36127110e6f5f03b1402f14a60b1e6f66a91c7a78f63f1f41b1f10c5c19dbd8d. 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/e94df310-6cda-45c1-915c-7df057649c8e.json and https://artists.proofprofile.net/proofs/artist/e94df310-6cda-45c1-915c-7df057649c8e.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 0x49cf455594779a24b1f152c5d14c49448c122a677f4119ebeef4683f67df99c7. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/BRS010900397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a8d15c0721de9b323d4f0c66a0ec14c2489b216457be8d01d4d69d379ff44f. 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/BRS010900398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099acc0d765fd1603e801952e7ec276ccc970156a5602d8e797e18d048675069. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:52:37Z), 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/BRS010900401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0a62c47f84e2e943fc66086f105bd73a6b6c4e66360d90d9a9dacebbeeac49. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BRS010900403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b95f33d7a437fdeb08a135f8d57313a4087871cf950495d5417128d6f17c4d4. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/BRS010900404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97a7030c1abe38d1d87b1193805690a921c31ae4eea212b53e4d3e80b13ad56. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:11:10Z), 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/BRS010900407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972f605d3b119df0dc2e66acae1d270c1a1ddd37eeb9d11597f6ce209d83f76a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRS010900408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaeaff3825a17bb3136e0efada9c60a031f1e08b4ce6df7d5d9ea8a68f4950f2. 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/US7VG1585535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e20e24746f081d335eda1d22aefb2ffddf282ae543efd1f6cc1d40119261fcd. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/US7VG1585536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1ad5fa1c96c274fc606331388af7157f2552d506e1155367336a885b41127b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US7VG1585537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e96719c68899cfe59b1b30ffa1643b6bc1b64d5e01980f6414a228e69064ed. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T16:04:10Z), 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/US7VG1585538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26111d1302a251cf8d5b1785d7ca75453cd641fdb331703148b72296506bc107. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/US7VG1585539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae41f2c712dc3e8b0a8eed2b4fc1d67a743119c36e76c69152bbfb5848f2a46. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US7VG1585540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8741ccce9746ee406389b88bdedcbe8c1b0ecab6111610f03070a1d3c3e4a75f. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:49:11Z), 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/US7VG1585542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0ddcb915e8e36cd622ca8acd16c10f61d8e55e52d9277939a2c495f3305927. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/US7VG1585544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb57eb3828c78bd00122535c5406025188057a4787cc0e903c65b2ceea9aa6c. 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/BX6C82300001.