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 0xbe37df37528ae39073c80447f8cce7332cbba5247e6c2da09e4f51fee6fedba0. 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/3d5e6ae8-a724-48d1-bf25-8cf5a7658193.json and https://artists.proofprofile.net/proofs/artist/3d5e6ae8-a724-48d1-bf25-8cf5a7658193.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 0x9e284fb59830e33c9adbead0b3837dc1c7e46252387b169c4bc0e52c38ff1228. 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/ES5051800086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe806e5f0fcd6c07353594f1818470d6d56b347c1a90487af4c0e6bf70f2ca5fd. 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/NL1ZN2000514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8d4f9b5f3a3edb6496238496d554c8806b47d11ce1b78a0e902b1008dc12c4. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/DEE862100676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcc53079c19b99402f1fda2e3a5d7232d68d9b7c6e92c3e90520efda1c83e16. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZS672187782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8f29e8c2523a8f6dbdd526118ae4b5ac58a4f6074c875d7a42bd27310b44d9. 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/QMDA62101760.
I Don't Wanna Go To School (feat. Shibui)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b108c67ef637d771648e493de2ca70614de3b798a50b36785873dffecf3e4b. 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/USUS12200215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1830b7f0f0adf82f9b56ce5ea0864eed4215c09692ccbd5b95c6dd37de2d3336. 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/DEE862201155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9974609d25376a5696f5960a5049c1900930c9f97a126b04f7b0e7d1377628b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAHT2460435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d1e1688412830a476df9633b035281fe4e6b47e71e5005d584fda869afbacd. 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/NL1ZN2402949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4e1f053a754b9cec6da449cd607dcdf6c927790141cf90608faf060e3f76a0. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/NL1ZN2402964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf43f89602832e701699fde206e3885d72a9b9c570b28cb826fd23d539d6d0f1. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/NL1ZN2403054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98970c11def570adb978cbf47e0a146267aae6980f6ea0f0267abd9004908bd6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/NL1ZN2403166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd947514de44b5986ac19a9c1c58fed3057b00f9826493b6d2936a0003a1a73e. 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/QM4TW2124985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4834e380d3c4962541c6fe3e0372eb206f636015cf0050218949623ba29b5ca1. 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/QM6N22116026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd6d40bf41735812c6b4cb705fd286730a2404e518836d645e7b31d75776fe5. 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/BEIW12300687.