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 0xa3909b34e6c26fcc17987ab6374053dd2582d70d82a38f4e828d4c82ac72655b. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19c4018a-2deb-4ee9-9637-a86fe1b6196f.json and https://artists.proofprofile.net/proofs/artist/19c4018a-2deb-4ee9-9637-a86fe1b6196f.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 0x289eaab139a8ccbf2cff007e46c8e7c137263f65f0486fc203b07ebd591d337c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAIK2422239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0d7383ed43b681568351d7904b254e359d0e129705c62f003eaf09d8b55583. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/TCAIJ2422263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719bbae822fac243ebbdb92d84b216aff0e11a60f25a36e6d8d7930696f8cab4. 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/TCAIK2422279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cc36d99e6b3068833545600d226da738371db99a1134ba10c93fc17e29cd06. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAIK2422286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ecd1402b1b0113f804267526ee71bec0ee046362f4070d946232c22a9df697. 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/TCAIJ2422292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e04bf9324b89192a5c43f6d178f43050d90bffa1e9f569b185b4500c4c48fb5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAIK2401603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69259ed274f53ffc96645ec567b1110175fabef8075aaca2a6356663a925d78d. 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/TCAIL2401642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e75f3f2bafef22b139033dc913d31fea4d20d27741158a38d2a985eb159069. 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/TCAIK2416032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d083118fdc078f9c8c77e52d5cf80c62482db5ab58eb1d72be4b9fecdb46efd. 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/TCAIL2416064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecaee8fdf159cdf919ab06ff5a3164e8758ee1befb249ce85f93b0a2168a4df. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAIL2416074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7863100b60aba69245d1248521b91cb4ae12b7854f9596e7dbda9679b8f69b08. 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/TCAIK2416096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2d4188fa12a5fba6dea05c65d25ac45587860535469218cfe775cc548ad80c. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/TCAIK2416102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd503c735fbfb2c271656143066684755520ca2fa50560dce087c2e0394d00f20. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAIL2446526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e128729b0c9124c189b65fb7f000c354fa3d418604829649f9ef8b12a85952. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCAIK2446532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1829956b06f07e70ea677cc6efac5856ac65f5674667a0f27fb866f8f6d2d4. 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/TCAIL2446539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60928bac62dcadc9f4871c6b201418c2a61464d3c6fa5aceab641f51c2c88b3d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAIK2446543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981574773f44c22c79ead6a1dfb793a72887c85c66b2c3d9afa3a8220e90242f. 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/TCAIK2446558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aee00e26d271c2e90b036a449f326ac787a7288279968c1a323d8f647b00ee7. 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/TCAIK2446560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f41ed6c61bf873c2420c72b668ccf36ec079010e8d841d8462a2612f00c1ba9. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/TCAIK2446564.