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 0x042f1c1888b35e0f84442be54ae123257d339fb3c0219c19cb88042cd21c5dc7. 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/daf3ba74-af0e-49c7-9a74-9df35e505352.json and https://artists.proofprofile.net/proofs/artist/daf3ba74-af0e-49c7-9a74-9df35e505352.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 0x045f04c3dc400f91e28ae2cb9004867b20bebd85b392797dcdf134409fb50ac9. 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/QZHNA2425493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df402416b0881202c2b655241d624d6a7de639fc77102c8a81e11a3f715c913. 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/CA5KR2132978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db4f37faef76cb55f19fe864c8800f57e759552c0aefe6253f8e45c34e28773. 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/BXBK62400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca649acf592bce89e75622dad4ff70ec178f5cfce8c31bcf48eda0866b5c9df. 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/USA2P2414008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55be8fc472932f2322b572dbedf75ac70ee03bd2d66ba83510a94465916d008b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P2414009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedea07aebec7dfd8eb8e0e86abcce866911148017836deda55f12c6a05e3c3c4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BC9TL2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bdfec18d9eca0f62079d12edfc6bff96e69ee8ca0e5d6eb4d7847e23fb3164. 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/US83Z2478210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe115594d9cea8ab02c9ec9e4f9fed2f1792e8f6155d6f9307bfe237d7843cbfc. 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/US83Z2467757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9634194625de768f413b399b39fdb8b6fb30f17aa0ef7b5ae660319b9d97b9. 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/BXBK62400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eba976e4dc21c1a6ba87bf0b732d61745d316b2fbd610a66644774b3c70c07d. 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/GBLV62307719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce82a5f69ce3789a3d416c0e7cb41aa3f26467092a75b40af25c6f31f06fde25. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BEIW12300572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e921fad320212b6c6e6410892daf5bd6f9c8990db8652a90de23ef74550d5f0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US83Z2336020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc480f6c767994a6d34552e7bf553f5321b0a07afd9380b8b2f272f6d486ad769. 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/BXIED2300173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248f514ef83a3c11f57d63b141231c39b1ad0ad40ba11d201eea71bba570d5b2. 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/UKACT2330358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7c9c64c64f3418dfacea1a4ab2600250a7b8e28e544764e5f150a431a74522. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BX0BA2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481d6c1bf593bcc893e6a73b6ce7a16270e22fad86c9589955dbbac9f9a77fbb. 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/QZNJY2108081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1706bf0431c326eb2703231d20a3aba9bf89f333911f7580b6d84a9a390f03. 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/BX1K42100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf6f6f5d64a2bc6bf841fbb283ae406e1f8665ccde716be4aff686016e8f653. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXIED2100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee80dba3e9242f41744686b9d0d06d68860ba0e6df3956a94f55e67aa3e8fa7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BX1K42000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db4f37faef76cb55f19fe864c8800f57e759552c0aefe6253f8e45c34e28773. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXBK62400098.