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 0x6c253bed9ace65e56a61b2ab23aac25d23564188c408cf85a43f82ee942e4fec. 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/5608837c-cd86-4626-9c7e-236d0f404644.json and https://artists.proofprofile.net/proofs/artist/5608837c-cd86-4626-9c7e-236d0f404644.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 0xc22b8245215dd39549f041730091fa01e5c0669560e53957ea68f2943336b20c. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZFZ52025737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d5a916520d4b6cd4f925d241e916ba0abf3c24038a7f60728360245c32c1aa. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHNA1962157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04439d24da04c6aacb40070e4ada84dbc7ae104459dc1e5226a2c26c1559a267. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHNA1962170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46d6c90942dd3eef0554acdd7108c8cf92406fe5be1e30e3446279fa2e38241. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:32:57Z), 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/QZHNA1962168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de369104f0985d2f593d64f6de81a6eb31e00b600588ba4befc0735bab05085. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFZ52025744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8573c62cc6a5677c6314cdc6a4ce3dfa1af0cccaf4381c4cc0811b16dec3a4a5. 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/QZHNA1962175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb263ba0303e716dc53227581f169bdef5a52462081941c51fbe171a30b9d2f82. 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/QZFZ52025747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede27f008a4e77af93253048794353b4c78cb86cc9a2b91719b129e5684dfaed. 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/ES71G2206837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf20242d2ba790a6f126b3370ca07e484b6ac7d123bb837374136b91790f8e1. 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/ES71G2116366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47732a546da400eec04136f3bd9f065c479efaca23ac5e56ae05ab72632a9d0. 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/ES71G2116358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d72d1faa9d26b9231bfc318926dfdd30d7bd0bf6dd0525c257c8ace23fd528a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ES71G2116359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b7438e011582721f0539f00ab553e40e6ae47352966a65de8b18e64a6977b9. 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/ES71G2116361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe8ef7540809e49c5fe4359aed8ea94965fa1ec43cbf02f72bd0a16cbd78556. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES71G2116208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5921be09ebf403a2915255ecc472583a5c90c76c6bec8cd7837bae8210c9017. 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/QZHNA1962153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04439d24da04c6aacb40070e4ada84dbc7ae104459dc1e5226a2c26c1559a267. 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/QZHNA1962170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de369104f0985d2f593d64f6de81a6eb31e00b600588ba4befc0735bab05085. 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/QZFZ52025744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823c131e46c0f7eafe432302a0ddf9d2a61f4854691b5e0c135bfd9cfd113a2a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:58:54Z), 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/QZHNA1962152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46d6c90942dd3eef0554acdd7108c8cf92406fe5be1e30e3446279fa2e38241. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZHNA1962168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4711573bc7a35c2b415e9588c37e2b594faa54ee742462be6727ac06c195b40. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZHNA1962163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22b8245215dd39549f041730091fa01e5c0669560e53957ea68f2943336b20c. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:03:45Z), 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/QZFZ52025737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d5a916520d4b6cd4f925d241e916ba0abf3c24038a7f60728360245c32c1aa. 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/QZHNA1962157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8573c62cc6a5677c6314cdc6a4ce3dfa1af0cccaf4381c4cc0811b16dec3a4a5. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZHNA1962175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf20242d2ba790a6f126b3370ca07e484b6ac7d123bb837374136b91790f8e1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ES71G2116366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47732a546da400eec04136f3bd9f065c479efaca23ac5e56ae05ab72632a9d0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ES71G2116358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d72d1faa9d26b9231bfc318926dfdd30d7bd0bf6dd0525c257c8ace23fd528a. 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/ES71G2116359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b7438e011582721f0539f00ab553e40e6ae47352966a65de8b18e64a6977b9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ES71G2116361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47578b1800b836a28a5394c6393ce561104435c3fc85fb18dd816980f3d2f5d9. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/ES71G2142845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2b3d5206fc5ccca8af9f3d0c224b26639d64d4ac3e966a6c7df6385ca6ffef. 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/ES71G2148687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2b3d5206fc5ccca8af9f3d0c224b26639d64d4ac3e966a6c7df6385ca6ffef. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES71G2148687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede27f008a4e77af93253048794353b4c78cb86cc9a2b91719b129e5684dfaed. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ES71G2206837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc13761c54996efa6ddeef9c3696e9c7328865c51cdc086431bb4f2ad17540b. 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/ES71G2212813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc13761c54996efa6ddeef9c3696e9c7328865c51cdc086431bb4f2ad17540b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ES71G2212813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0863bbbab79c72d80ddb95f4d7e97b666af5631f0712cdd7950eab434ab4b6. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/ES71G2216887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0863bbbab79c72d80ddb95f4d7e97b666af5631f0712cdd7950eab434ab4b6. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/ES71G2216887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99f7dac60528fcb9f9c29ee106f25571430ba83c8aaf93709a87f2c28f9f54d. 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/ES71G2219843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b743022c4cb9d480e3c9c4a6db63448e90eb50c30cf8318a1780dfaa0298393. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:01:55Z), 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/ES71G2306436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47578b1800b836a28a5394c6393ce561104435c3fc85fb18dd816980f3d2f5d9. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:26:22Z), 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/ES71G2142845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f204fedf47e14bc8821275875aa9a040d1e37275e453642a18d475ebe99b52a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES71G2415570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b35a274daa03472c622ca0302af074dfd99b30c2ab367dd318fb2726cf3e6a. 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/QZZ8A2555604.