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 0x3ba0a8d654fbe05936b45b23aa6c9ba599511f686eee56dc4b396345805eab11. 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/77d610c9-be47-4690-aa4b-7040e6709fca.json and https://artists.proofprofile.net/proofs/artist/77d610c9-be47-4690-aa4b-7040e6709fca.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 0x4b966c7b2ac28d15368a2d871f1288de9e131f13eadebf1fc911204fd7815551. 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/DEZC62418148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42252b99e33a428a2b18d448127791b92374010683cd712f69c8cbe59cd1d11. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEZC62463822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c553fad4cbc8c9f9b9bed35827be913ecf25bc2848e2718a71d7a71518551f1. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/DEZC62459965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42252b99e33a428a2b18d448127791b92374010683cd712f69c8cbe59cd1d11. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEZC62463822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736f19195ed97f5915f3667590c32c0d1e8c571d9068ee2602058ade8a661dc2. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DEZC62451287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c553fad4cbc8c9f9b9bed35827be913ecf25bc2848e2718a71d7a71518551f1. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEZC62459965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42252b99e33a428a2b18d448127791b92374010683cd712f69c8cbe59cd1d11. 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/DEZC62463822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d07869cb664d210f35a1e0819e08261ad7e030ad4fcae97340aa991736a09ee. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:21:49Z), 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/DEZC62574028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce9aa36d38f521823c9ad6d03c04e3dc251fb1741a9835c1a400826225a1660. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/DEZC62599124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae82621c85205d86d0509a5a11f3a6c47b2fa13f95dbab5cbf62454294687a9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEZC62502595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce9aa36d38f521823c9ad6d03c04e3dc251fb1741a9835c1a400826225a1660. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEZC62599124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3438373d4ab9ff0a2adc5fc2f81cc1083c81c67bcfb71cb3ee84ad95130ccf7a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEZC62506959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae82621c85205d86d0509a5a11f3a6c47b2fa13f95dbab5cbf62454294687a9. 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/DEZC62502595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3438373d4ab9ff0a2adc5fc2f81cc1083c81c67bcfb71cb3ee84ad95130ccf7a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEZC62506959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae82621c85205d86d0509a5a11f3a6c47b2fa13f95dbab5cbf62454294687a9. 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/DEZC62502595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4f5ca64c64feafc946c26d2a18cd4c9e6aca72044a2ea4577f10f7e4a836c4. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DEZC62514037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce9aa36d38f521823c9ad6d03c04e3dc251fb1741a9835c1a400826225a1660. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEZC62599124.