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 0x63ae269b56b18f908bbbfea192b908aa4cb38fc72cd29a306cfd13bf05971ba5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2640c47f-088b-46f8-8fe4-e32cc432b97a.json and https://artists.proofprofile.net/proofs/artist/2640c47f-088b-46f8-8fe4-e32cc432b97a.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 0x62a81ec913b90c47be87b87a15de41b7a5d5eb4484a16abf9d1eb957cebe9d60. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLC060800305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2eeab9f2283afa5967b712c88411aba7b7463faa9dce4b5cdae3696b4ddcb0. 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/PLC060800306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ae601300f6b1475f614bc60f1c6c1b5396fe46cad905392b70310e70e4c75d. 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/PLC060800307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb9dbb2527565cf0088b0b62b966cf94cc451edcb994754e6edb3d88a90cb97. 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/PLC060800309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec8b106a366fdde6d15ed043efcd83e3e360dcd403e91e6486667625ece03e7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLC060800310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2052ed448221ef09c45bfa38673f18235c8de293fdaef0f534231dea86468aa. 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/PLC060800314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470514dcf8c8e6cbb6b78005f9068481e960778d99a93b5bf190215a1c367e36. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLC060800316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6028666fffa58138a66f0381a25d77de1d37932dabbb20f80dc951282df9b99f. 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/PLC060800318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22895582b5927ae319155bc551b0f8aad4d0a6df49c9c5dbf0f55e4154ba8c90. 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/PLC060800320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4759aef1d09ae1b433e5ea5bd873d34614cd21db13bd9d56f444a4c85941adc7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/PLC062409116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6bfe189192e8510d0376257a4fed615524b8ab8953860444f8ded9320c8fb4. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/PLC062410202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2c93ac3f0614628b4fbf750a6a3dc6ad3b600a00b7fadb63418c6ba7bf2089. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLC062414862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c6915f26bf96da26495dcc3106528d54cce90649f75bffd4ae4c7389815889. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/PLC062416003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03a76279d87382cfcfd6fffe38db66469d420ea7d54e4f1003499d171b299df. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/PLC062418903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa568816a7bcaf288896d5f5e3e08bfc7080587562d60fbf7dd4d4f2f57c6bdcc. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/PLC062425120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948f18985e2b7e244bbb65c9bf64e3dd37878e1b2f52e152f4a6bafd8af30898. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/PLC062432634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3628e7966a37165c92d1a607d1fb75ce45b90caadd90d15e01776f7940d467c. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/PLC062433239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948f18985e2b7e244bbb65c9bf64e3dd37878e1b2f52e152f4a6bafd8af30898. 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/PLC062432634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a56d7c8c61aad0c88d9f447effc0f068c633861d8e2dd5cff073cdc6160fab5. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:11:48Z), 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/PLC062433509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6bfe189192e8510d0376257a4fed615524b8ab8953860444f8ded9320c8fb4. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/PLC062410202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee69e0e025a1bd61a09c3d8b62fbdb823e0d5445f63305656160b18c9946e94b. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/PLC062433512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4759aef1d09ae1b433e5ea5bd873d34614cd21db13bd9d56f444a4c85941adc7. 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/PLC062409116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cde5fbbe4d70f009dbfd54707f0753ce4342ebf0bc98e7c76fe6555685e2a5b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PLC062433489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a545ad67b04e6a4161462e6d157256c48b35bd7e40677b4dcd3dbf663fc1cba. 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/PLC062437070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7f071a1640d56febe89855a22b787d37e6346135b6ac545b671ca5d7c5518d. 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/PLC062444293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcc337295d73707d276cd2b78079e660108906bf8d0bc5df7535b966b278686. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PLC062510985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84ba7af71cfeb06f8e1eb1536452c5b5bb88076857bf268454419179678ce74. 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/PLC062516495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a67f7b602c6303a1035a6ae88a1e718af80c6cee961bb0de139dafbfd49827. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/PLC062524792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d23d86792cebd1fc5679e9b17b61002d39742a280f901bd342282ea5d71313b. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:08:34Z), 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/PLC062529047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec425565814eff72ddbf2b9b7a1b02614b484d89556091dd2f56244aadf89cc. 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/PLC062547667.