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 0x0297be667f8f23559625a7bbea605224545189d13da925ab8dfe322e3212e131. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7407a6a3-046e-4e7e-b4b3-d7650717fe30.json and https://artists.proofprofile.net/proofs/artist/7407a6a3-046e-4e7e-b4b3-d7650717fe30.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 0x475961f72a4e3e57e435fa54fa0ad8ccce8c356d8e1834afc88687c12accf5cd. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/SE5W32102024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2070614efc84d9de3f3f989d36bab544a3dbfd957ad067d22236aced02d801f4. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:41:33Z), 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/SE5W32200570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515116399a304b19bf7486bf42150f9175eb62277dc66fefed83a048ca04c86a. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/SE5W32300325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4190d6cfb1a9d5135557e1aaaf89afa5a4563ccef08e28d88419243113d7053a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:43:13Z), 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/SE5W32306618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4812a4681db8e30f30d6a2ed58675ea82935b6f5ff72ddf159f0093190d50e8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE5W32309565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5aecd5ecdabbc1678edde94595871c22344010d41ffa735615008aebdb24b0c. 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/SE5W32400508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9defb883353169c1bfe17bd08f43903e77ac7cf805e56caf69262a3c125df762. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:53Z), 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/SE5W32405852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d930cc459bbb646a32d5eba5d37bdf44491492c75b544ee2460a6e451ee01b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SE5W32506319.