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 0x55e529d9aa30c95b70c5877a52d46c51ba679a2f7550654d97f5b917c1df23cc. 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/fe74e794-0e0f-49fd-ab98-c563d939beaf.json and https://artists.proofprofile.net/proofs/artist/fe74e794-0e0f-49fd-ab98-c563d939beaf.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 0x86b9d35cb0523fa0808186fe656c04fa4c18f22e4db23d0923275490b150d0d5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MX3601900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef44a89d2657ed80ccbfd1571d23260ad5cfc5f18336936ded6e39987b061366. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MX3602000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b573ad8a4da66b01f9158a65f8d41b71248837165eb850d2ddd045ff2d82949. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MX3602000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb76e671637a3f4578247539ad7bacd46047a67aa1cee0bbcd402d966da98fa. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/MX3602000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209b2c13f47b162900870db593436f01df140b3087a391b5c339641a2370e8d4. 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/MX3602100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8853a6c422aaa8475c448fc232ac537cbdc2948c6abc6f7ba818bc10fa1b95c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MX3602100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f1e4413d6eb2b9ab427c84064ab962931481902a2fb58bce45c72608a34609. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MX3602200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d3e86b42b05b5fa9ebc433e2fa00dda1e8d00fe50dc1d889fea09a28f2ead8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MX3602200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4f837a1aba10be150b72abdcc3965d958be9931544f2d7f15e5967f947e46c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MX3602300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e5231e6db55784f7f4469d3306cd6e7594f2bbc3bec733d3da76b289dc29ba. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MX3602300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c1fa28aa404a567bb2a597946f3e773f4467a0587fca611a0f4e6658d1d75c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/MX3602300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb251ca9ab7a331eaf8ed255bd924d2d09287be1ec2f16a6cf90de89bb3793f18. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MX3602300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d253783a1764bfe0c15a6e0c6b818b58d944a1e6fbb2f25c94b712375a2188. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/MX3602300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b9d35cb0523fa0808186fe656c04fa4c18f22e4db23d0923275490b150d0d5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/MX3601900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef44a89d2657ed80ccbfd1571d23260ad5cfc5f18336936ded6e39987b061366. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/MX3602000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb76e671637a3f4578247539ad7bacd46047a67aa1cee0bbcd402d966da98fa. 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/MX3602000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209b2c13f47b162900870db593436f01df140b3087a391b5c339641a2370e8d4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/MX3602100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8853a6c422aaa8475c448fc232ac537cbdc2948c6abc6f7ba818bc10fa1b95c. 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/MX3602100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f1e4413d6eb2b9ab427c84064ab962931481902a2fb58bce45c72608a34609. 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/MX3602200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d3e86b42b05b5fa9ebc433e2fa00dda1e8d00fe50dc1d889fea09a28f2ead8. 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/MX3602200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e5231e6db55784f7f4469d3306cd6e7594f2bbc3bec733d3da76b289dc29ba. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/MX3602300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4f837a1aba10be150b72abdcc3965d958be9931544f2d7f15e5967f947e46c. 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/MX3602300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddb6b912cb429b57f8b6d6e348b1c542ea154fd01d5a757d345b99976c786e6. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:30:43Z), 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/MX3602500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b63facc600b8ee6e9fb21bb11d2c4e2924047c579bd34eff37ca420769f51c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MX3602200009.