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 0x89f1f00832417d0b08f62a35bbe522ec10b83c040cef2bf82fbe991d3d42b2c1. 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/ea8968d6-e38b-4d41-9e6f-1faeb8ca5abd.json and https://artists.proofprofile.net/proofs/artist/ea8968d6-e38b-4d41-9e6f-1faeb8ca5abd.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 0x1bf39c125d5dd43ccdb3bfebc1c574f6d7fdbd2b3253cb838fd8d841ed96a87e. 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/USCGJ1113264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca7405fc342ebab400c5dcc72428ea0b5d1ef84cb02e0ad9a6e94164333f621. 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/USCGJ1113265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425ccb2707136b628c353bc4ae353e0121ff17f380c701b8f27338f7d3b718fc. 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/USCGJ1113266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb541acd7df862ea01e4faeb419bbdd7a1d9d2378f430148bbe93caf618cd1e1a. 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/USCGJ1113267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff149c08fab60e9beb851973eebd0359f71cd3eb1b0dbc97acf877c4a5b0317. 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/USCGJ1113268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cd68f06a87c6bef42dd7dad52eddb1eb648790c09dbd072d6b2e12083bb002. 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/USCGJ1113269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0825e62c8bde1f40cbd4de79c84a49421e1230fd833a514d4151822805d932a. 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/USCGJ1113270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc2fbb000bce32f9caaef39c645e9289d1b43aa9ec763ff79a271f4c8fbcaf1. 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/USCGH0574785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12f5d0ec598aa6952980987b5f88590fc1debcdc9b2020a3193d2c58cc06801. 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/USCGH0574786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534a38f0bf4095587ebe1c0b626c1d0fab1e4c7e6a8b7754891c48bf6fc332b0. 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/USCGH0574787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba9d0089053e93aace08acdc0abb77a3f90616675fef5c66f31abf6ffa7810f. 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/USCGH0574788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1b467da7d5f06b222f81aaccbb723d59b36b2ec48141c4fec1be2ba9d749a0. 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/USCGH0574789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e45ea588629565ddc1a9636445cc1fe2e03ea1382ee50a86cba00878b71c6a. 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/USCGH0574790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bd8eb4ed3b1c75827defd142b4efd3fd283ca1760c35e1641483606248967f. 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/USCGH0574791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc5a4b82aaf5c2246d35fd3954f0dd43313709a12389c6973fdc8cec9f2c6ae. 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/USCGH0574792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f52f771d3640cf07c8384e8722a0529144a28283f8daca8253075b4bd1114bc. 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/USCGH0574793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64827c92aba4282a267f74806e052468f020a2f35b995e842a2e0f82135ca89. 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/USCGH0574794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241dd93640424ab3e8fd13ce777fcec64e798e983a80189663ef32c7f4c5bb6d. 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/USCGH0574795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7688d7ae6775d53e9cc700e5d9e2c7cbab5d18a23d70431269a5a540fe92c6a. 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/USCGJ1111937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69aa91e26b4eefeef0df25e7fa1b37de88ebf63ad5a8cf62661573c670d77b72. 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/USCGJ1111938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148e61742c914e50e6647d5c686ec8bcc032db6a28a59203943fe44504e047b0. 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/USCGJ1111939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bc9dc9d538e7c8332d2bc5371910ead0148c95417d5c1b774d47d3efad6ff6. 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/USCGJ1111940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03358cefc3bff38dd903b85664fdb5482e6a8f2f330c05206ec7a52ba986765. 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/USCGJ1111941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8bda26f0f2ec022767ef65f911e5dd41c22678bbd868c240db224b0191b243. 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/USCGJ1111942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cf36079b1e3261902520be72290946b0464c0dd71d92753dc9db6d90813cba. 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/USCGJ1111943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ce4eb5e06a35f4799fbf5c4da3b192a3afcea8704e2c03430d9302e6fb5558. 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/USCGJ1111944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b60e5aeff3d5cbc1cbbe57822ca925f99bf80f7d35e22f8a6bc5ac6daf3a5c0. 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/USCGJ1111945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a08aaea02a0500b67a69e1365a747d623b0cf1c84fc5fee87be8ab7f2d7e25. 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/USCGJ1111946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bae5483a222c32773c535475d5461d65367f66383aa005b102bb91fe1a6155. 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/USCGJ1111947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d7cd232d9816de3600305ff45005cf3c4860f55431373f11a0750e14cd18a9. 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/USCGJ1111948.