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 0x90ca6ed73a96f033c25f1cffcafc9b5ec5f0ba095454dfb9dafd366f6565c7a3. 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/60ccdf84-35c5-487b-b241-df5bb814316c.json and https://artists.proofprofile.net/proofs/artist/60ccdf84-35c5-487b-b241-df5bb814316c.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 0x1202e848cea4e85145c07d916082d533986010afecc5e3630b31e427383e1e5a. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/DEQ120505798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0525943b0aec47860d7e957610431a71688886579bc7df4639c9979b77d45385. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:24:37Z), 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/DEQ120608014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441679010ed3bd0669ab32cb994f27492326bafb1cb14d610d4142f19d1016ed. 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/DEQ120608015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ca036a97f90fb8a4cf63b93f9c1bb5a32b089266eb50d3e3e096728791a14c. 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/DEQ120608016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f73b4bddc55eb9494254839ecfd7968d8058987b09649aec005a72b87fbc91. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEQ020501737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001638ddaf6b8ffb4b2d0a209c24da0a3644f04040505b39809a28291d2f214a. 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/DEQ020501740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556c9f6bef1ff59285da42c379b7ad35bd57040fed43a9d03c2f9881c595c887. 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/DEQ020501747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f886747518d25de9f50f743278da3fbe0f43c6bade9e39f1c858f6b0e09389c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEQ020501748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a21f0587f7e7a2136ca3383113f8f040acabc58d099742a5091924a26b627e. 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/DEQ120608001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d052cb6db834e67b04fec07408c2a6d7e3d1b99ba1f8af8a06a4ae224cc30a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEQ120608411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebca500f538d68fbeaf254e0818d979000a645dfc1ae215a8b3c09d72928bda3. 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/DEQ120608404.
Little Closer - Irie Banana Remix by DJ Farhot
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d2efbf3115e74f0a316b31d713cd9c6b0f33302ae09d201d54e42094a11758. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEQ320800264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640ce1e796ecacecdfae0c81aaddb7c3cf955c22ddc111c4bf0990fe395a764e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEOL51500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffeeff17407ba0877223c86fe66176a30814ca883807ba0a6a142b3749171b7. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEOL51500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f1284b997d1d5f648b9deabff1c26e5c78bb9aae40602269d40b08d1d05923. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DEOL51500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b619c150b55c8c54d850fa3a096be6d86a219529620557f8bc8a72242b35e8. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:46:26Z), 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/DEAR41899523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1520e5ebb473c0f55f886e18e6d80568c0ca779b5cc3462327981ce15822264. 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/DEFY10806230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d03f76a57e72a54014bab9cb6df58d81a7c8ea136158bdce990c58271034602. 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/DEW930500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06507176c02c1540954e072227339533881414ef827b33112269ca34ed0c704. 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/DECC61400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92602bcdeee2b800c058f1e6d6b53ddce4724f13cc71367fde307cfa74f7cd6. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEE860200975.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch