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 0x70bb764646f78d9637dfd02118e4d74550b93277caa7cf4bf5901da2f62cb704. 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/7f59a7a3-37ec-4e78-a3d8-77a67040b105.json and https://artists.proofprofile.net/proofs/artist/7f59a7a3-37ec-4e78-a3d8-77a67040b105.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 0xcb06138304c953806e2ae4d2fdfa024aceb85a8642554b5619d40c45ed4254a2. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:01:38Z), 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/SE5752461258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e59dd700e1c1d2c0a51f68ec513fefe5f585d530dc59a10fcdee9a124cb8b71. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:58:23Z), 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/SE5752461259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719b112b8ba13dfb5e156a2c491713036f143999efe0dae52a54b347e173f2a1. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/SE5752461260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fde6d654075f7c5b2be96bcf185b554103c7c59ca259b41ab9f0e4d95d0851. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE5752461261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd27ba47308130477421458755862b1245622ec0b66a6402c51b4d80a0d44c98. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/SE5BU2491124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c781216054e69151b3f5fa7f27d2956ca26948eae4bb4fccdfe7548b2a14fd8. 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/SE5752461262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86ab431b4e64d810f66d1d32411efac8ef0e079a516acdd0c74bdb49d11a16e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE5752461263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484d5962c60cc9035b458b2ea54f0994c58e3429ae5d11a524f1e99c02ab6033. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/SE5752461264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92597d05e3c7671cdde8f5fc234103a0be46107ab3e6f0c532c7bc6b44cd055a. 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/SE5752461265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490d40af9573a7b3e1967efb8d49bd392372c5b997c84b1cfc1c242c83f152dc. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/SE5752461266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3445d80de04f178d43177f87789f100f91eec51c3eb6e8b04674a31d47dd5b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE5752461267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004d76af5edda4e52f20bb250e288dbc84ad82d05fef49169a4f16df922149fa. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/SE5752461268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2ceb7ab55978c0f2ca7520b24f4abf1db3b453e1effd42600373789dabc92b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SE6HN2401344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295fc91c8335b8a7c7ba1156e4f9138ebb0e09c79a28088933060e7882326d2b. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/SE6SA2408833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62be13d3429ad5b2042f46b1d5f995c29c348f798e38aaab95c18c3df4c75fdc. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SE6XW2532786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b99441b838d9e1d4ffb44dae7ac104a0f9a019ce5ac810ac150cdebd5b1b20. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:33:02Z), 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/SE6XW2550730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188a6e1bfbe0f3b32231f56194b180a368efc3da6aeb508b80d640c22710cf84. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/SE6XW2550731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d687e6618b5e5c31ff0429c45bb1afc5264a1451f29d1c150ac935b75f04fe4. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/SE6XW2550732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2f902b78f81ea16ea7e6c907a6f4e95f6cd4cdff7e36e30481f7bcf371165e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:02:50Z), 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/SE6XW2550733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22c372249b55077b7e73a7e04de718c66f8e94a47e298a55386f537ec08ede6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE6XW2550734.