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 0xa34f5358a38c3f7670744bd5f503c24d3e199d5cbc12e21dc1c1dde067d46996. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/401471cb-fe32-4864-a01d-377713426a52.json and https://artists.proofprofile.net/proofs/artist/401471cb-fe32-4864-a01d-377713426a52.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 0xb324ce9498c962e066b8d3ad2ba93164b6f26d6e97519cbc16757ae63bf4e733. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/GBPS83724155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236e1f6de19c5c8ce935613f1121e8b3d9fa0f37f05c41869c52cf0d14086bce. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/GBPS83724493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed4d531cb8070c8b81e4fd8148be6a0ebf973cfc61265416bc93d8708e0ad28. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GBPS83724490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2da1a02a09094ff56994762178b323e44cee52bddc1b6096fec4b78c3ace22. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBPS83724487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ceb1933592a1e2bbddb1375437547137f19dcd6a2af17d0c810a700551d3f6b. 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/GBPS81694256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46dec37c73a7b21be8ecd186b04046c9da2f940e5e50476d5b69d2534ac40c25. 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/GBPS81529638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5b77f5612b0d53ce42f1e81311d904484730b8347668dfa5ed38e99840e2bb. 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/GBPS83724417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1aeda2e5ee7cd851746ff9216b244c27d100136db1efa50f13c5bd8d9c6eaaa. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/GBPS83724420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770f47651a6aab9d66713a74eca6c70709ddffbb5d41da0111045bade26d4c76. 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/GBPS83724152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef42202a6adb7a0d3fafa796f028ad1103b0c9186bb04c69d3c19a50826c6eb. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/GBPS83724153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308dd14c442ba62f4c7a6999e84c81b4a3917edf92ff5a63b5ff0d74ceca8210. 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/GBPS83724492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d47234a6e802800a4b9b999d4fc0c32ae05f0bfb3f133b18250db1ec4d1128d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:44:23Z), 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/GBPS83724429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31575b0efe42429aab858d337814c9ac757064d7167d56153a46176a77b7a39. 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/GBPS83724151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee421cb8b0865a4d2a28c417ea87cf9941b25b44549db6fcaf1c68ee52a27555. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/GBPS81529632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa067c12332dcf8c7947fe8bae85023e2d5f794d78f6d65c50bb033800801e80a. 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/GBPS83724150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ae3c2e778a3e62c4d8d56374c7991419282666dbd7b368f64c93c1de46fb95. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBPS81710815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b3abc7bfeaf087f9effb5c2fc647b9521a28612d0775f9044293cfe47c32c4. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GBPS83724418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8313dba107ad389ef9985edbc198fa3015c48121d33a63e527a045c57d05ce. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBPS81710814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd570968ded5c5890bf76c6cafbb2ea74ae2fcdce8733b65d6452d009ab977992. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:53:42Z), 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/GBPS83724419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65569432a1d0a9a24542328d44a0050c0921f99060bc5b014d7f4e025179f5de. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:24:06Z), 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/GBPS83724156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c1b403b9deccc6d4794e77d63ba5a09843e6c2e1311e2265541ccf2fe0f27e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBPS81529600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7b8430a265d43d0626e15fa983607400562e3101b47107bf13eed08fea65ef. 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/GBPS81529633.