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 0x9a38a5e0846b92f52b7d2b1d83bbea750b0e52a82496e152694f9b89d28021d2. 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/05978abb-fe3e-48c3-b298-4a025f193507.json and https://artists.proofprofile.net/proofs/artist/05978abb-fe3e-48c3-b298-4a025f193507.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 0x59e9599e1fae7527c200203f985b55b14c5b894fd0135f901594db791b04507d. 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/PLS282400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dee04c402cf5ac1185062622fc14b9ecc285c6ed6aff22c431a8f38713d7607. 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/PL41A2200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e187fb944c65c63b4a3a8085fa6c4c9405f0858bc54911959908c206ac3aad. 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/PL41A2200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22ab4164c0342743c7266b66188b5566a4372484da5266ed936e3a9acd33c82. 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/PLC062113573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59cdd359560de7f8f39bc49ad0209309ab1c3863c9d8ae4a7e204a0ac8bd638. 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/PLC062113001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc06c158db1b2e4b2c80a1f8df841d64cde3c909640213b7683c26a5b49af1f. 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/PLC062114144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1961e0b43f2492419bd06a913c0ca0c7b9344f815038597219ed719e6616e08d. 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/PLC062113575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ebc22517298aaafd937ead5775a255362ebbb45d66e7b1b68c3f16b337ea26. 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/PLC062113576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd73e902130b1dd2844c6c88f72401f408294cbfccd43763a4da0d3d2742b26. 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/PLC062113577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97cc3fdbf9dd83d7d40eecacd4804a2d4c0aa6ce6a3b769eb47369ca92fe3cd3. 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/PLC062113888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20bf1cd69590b0e060cb1afac62ad887b1aeb72a419c9ce2a796e7700f930ad. 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/PLC062113579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78653aac0c9d041461a073103f6bf3860550f3f12f131922664ef9e26179466. 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/PLC062113580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47652c00439f4e8c3ba39f0abcb7e0e4731db6d0d652db19c5f9a3346469868b. 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/PLC062113581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d26f5c49805976267e5d626e3111042bf1f5d5a494d03714c876b2bc016f2f. 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/PLC062113582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ceb7b74284f6fcec2ff7890e28bc11cb3f46acc7bad59bb0cf5fedec5bd04f5. 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/PLC062113583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5cfa77dd2d59d72760da52c0e5b73baf85c0073ebe9e675ce9856804bee1b4. 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/PLC062113061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae575bdbad647b755b7ffcd648fc0a9e97790e6a2d759707e316872acd56391. 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/PLC062113671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91a4fd97b1686bd0d909e3efa436bdcdb96a92e457926ac2be3b5f702690889. 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/PLC062113585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5077cd024386a5777fb621f5b264a7018221a05a7c6bccab62bf2c1c4b11afc6. 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/PLC062113586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298ce64db4099091f701178aa2b3f400147c4859386cfc0b31f1b86a182b3c99. 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/PLF242209937.