1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xd56bd743b3ca9e4a0537c0f5b91affa4cbff5c68a5cebfcf8814c727dd7c0d74. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df33ee53-2f33-4703-96ce-5fd8cdcc84e9.json and https://artists.proofprofile.net/proofs/artist/df33ee53-2f33-4703-96ce-5fd8cdcc84e9.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 → block OTSBitcoinBlock must exist at that height 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 0x406b4d9f0d64148e9b415734ab4f2a6a013a9456877586ce988788056963cc08. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:53:06Z), 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/NZRI12300691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672e791063e29524d62fa1f1a9e3a2207cc286360ee599c1561a843330271bd6. 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/NZRI12401337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9739019dea99db02bddabd89ebdfe563c8d4dd99a862bbf48032f4d68a9fe18e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/NZRI12401342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499b11b7becc4c42b595247e0b2272754f8a664ccb414cdd3350d2f804592b86. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:38:05Z), 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/NZRI12401340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb70d0a6caee714d9a0bc7236d363cc504ae9cfda0ad8fa186ca782c1f01a9f. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/NZRI12401343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5de020c5e01e07d0b3884ee8a8178c61ddd7c58df1500bfd6855c5906216ec. 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/NZRI12401339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672e791063e29524d62fa1f1a9e3a2207cc286360ee599c1561a843330271bd6. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/NZRI12401337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499b11b7becc4c42b595247e0b2272754f8a664ccb414cdd3350d2f804592b86. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/NZRI12401340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb70d0a6caee714d9a0bc7236d363cc504ae9cfda0ad8fa186ca782c1f01a9f. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/NZRI12401343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0a851c4e69614279fa5f044195902acddfc17dda351b49478e61a735779282. 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/NZRI12403090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406b4d9f0d64148e9b415734ab4f2a6a013a9456877586ce988788056963cc08. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/NZRI12300691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9739019dea99db02bddabd89ebdfe563c8d4dd99a862bbf48032f4d68a9fe18e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NZRI12401342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e302d95cc7e03f25906bb127bb3efd5514c3a17efa72779e7c2851ed27f8cf. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:25:46Z), 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/NZRI12403091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bb0a325ee42d7b6fe0776a636e27e68a77e62c22c84f4002153efcb6278d1d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NZRI12403092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99d605bfd2e39ff1054959c2c7a6faaad23ced7c35b9d872830f42ee07566ad. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NZRI12403093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbc38258b167bb27f05af701e2e5482b2d2e178b7a2a648a17611e31adf9c0a. 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/NZRI12403094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4671eaeed3b826f4b68e5c1fd321c431550f8802c8cd094f08b470c19e13f79. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:50:52Z), 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/NZRI12401345.