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 0x7533fd115a872d62b2e6207f3206d6dfc840cbb9929db81e10a9a53c89c10bc1. 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/9d417c9d-1440-468b-b4b9-2ea6ff0b395c.json and https://artists.proofprofile.net/proofs/artist/9d417c9d-1440-468b-b4b9-2ea6ff0b395c.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 0x3f41f8c73fe09ba3b7080c35d4e2f0428cd47cc6d23087fa92593bcd707227ee. 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/USLZJ1966606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1159fe02d3ad37c76fcc515eaed01c0b326727bb5ede7d2ea6f3a5d26657c91. 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/USLZJ1966595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e2cd02f824e85689fc3b02d778b49ec8ba1d8a0bee8f8687f4e5bd4684ad4d. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USLZJ1966563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4a510f954d2e69964045c1f418b182d247dd94bb4c86dbdead635c8cac70e4. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:10:02Z), 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/USLZJ1966608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1159fe02d3ad37c76fcc515eaed01c0b326727bb5ede7d2ea6f3a5d26657c91. 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/USLZJ1966595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe47d11438d5c89a4757a8922b16e7144b7a3adc1f4b5a8c9d67ada5bfd5113. 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/GBLFP2002496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775448bdfa31e11602f26991ec9829ff97c79e32309168c94de7257712412fc7. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBLFP2030907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc414095bdecfe81125831a2f35d4731193edece7e75d35fb36b865cde9baf8f1. 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/UKXN21948523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91acde5f1bb122e7dd0fd5de84705b2306cee8ef24f8ec51ce6523fde77e54b3. 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/UKXN21948524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005772433cfb1a9e2e5291525d94f6a43db5fc6e1acc01f4aac4a7e18b448cc3. 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/UKXN21948525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0e768c46b219f56475e15f87b651d201449a6161c02bd9875defeda4dca170. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKXN21948527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf861993bb24146ee74eaef325207b29000ee10de3e7dcb461bc9a8cfd2d52cd0. 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/UKXN21946014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bcb9d25b56e914b7f2e3056301efaa43859e22a21d6ea62d1553d1d5237d9e. 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/UKXN21948529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94ba41fc93ce9e8475c2cceec2b7e26ea1aceae56d593f92c6647c87f21f8c0. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/UKXN21948532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6918a5cf05bed9935c211576ea5a2b517b81c4553903f7f849d4d001bfce25f4. 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/GX3Q92122234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79b37ac2303d0f27bc1767defb9e7b543e9de653e698823e9ca69b52c4c710b. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZNJX2126363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c08fa048506df76c9aa4350c124d473d8283de787e020601695bff3868945a3. 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/QZTPX2115944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdab376e3eaf67eb5e473929dc195a559e4f4c1a51e52a12864fbd7968916b8e. 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/QZ5AB2203274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4e2983c46e34026e30d04eb2de67770f74a36dcefe8ed7b7c6c29f62bfc8f8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZ5AB2203276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3e0d8493abfe1274600c0f453b6ed3c5de43b92a44285e51a98b41c3152b55. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZ5AB2203277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444c49fa18f8f1b2a41c8f3e87b1cb0ed46f8660a8fb0cd40d3a32c994ec01ee. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES71G2318992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca5c3e3be474abfc7bd0bb1ac557b2e8a30d9e27cfdc7e9a7cfe0b80c8be610. 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/ES71G2332530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee8e6e7992e6c012af5712e6a77a891c68bf124158c42926af667952074ddd8. 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/ES71G2332531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9328f3b6b15d79a8cb5e87857eb031a830f3498520412ef5da93f673844fb75. 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/ES71G2332535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c2d876ef9468fc4f0754b8943f6d102a50e40922673fd243f4a1867983d7cb. 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/ES71G2332538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2886229fa9918e516f16c87404ddc6e2f50d9213e6fad6e515bbe8b9571591. 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/ES71G2323132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d562f2530bc76305a79917fe9f4808257f1c87aedfb8244d28a13b0ce2667ce. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/ES71G2332539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444c49fa18f8f1b2a41c8f3e87b1cb0ed46f8660a8fb0cd40d3a32c994ec01ee. 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/ES71G2318992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2adeeb69fd1b60f1c2d47a78144936704aabfae820aca437e08c33a396d166d. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ES71G2332533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31daae7dae3fec7b41aaa1722a59450cf47558c0b86d194f1af06f24b774869. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ES71G2332537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dac36bbe587c28cb32a0794767767dc0d04ca4104cbfd177e29e78bfd0b0b5. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ES71G2412946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6336fabbe0a8ee840b1e2bb7481f6f3c597d6bba6c3322c5c216eeede5eac99a. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ES71G2415406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d572ea67933f097db3ff3c6e4a1a4332dbefbd7c4d183ea430fef231c0ad842. 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/QZNJW2370010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641f1722c5e8891a94bec8e0828ffa0727dd6ce1307e258cef8fbd4df4590e44. 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/UKXN22172715.