1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xeaff9d571f3a51140b560fa272909994e0de548f923e3f963335c028825afca0. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c307bd0e-a9b9-42e1-bb21-d9dd0cf26d95.json and https://artists.proofprofile.net/proofs/artist/c307bd0e-a9b9-42e1-bb21-d9dd0cf26d95.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 → block OTSBitcoinBlock must exist at that height 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 0x8b983e2b511f2dc6d752feab811d0b94b5dfc925aa223ee1cbf46887cf0464e1. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:28:07Z), 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/QT3FB2590451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26dd20e135a4e869b88227171b11e9ab0b4cc94c70e8798a203e3e4d7e782a0. 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/QT6E82594029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305b0926391de9dee827f9fe4097f103ba49561336ddd95b3a52ad1a1f7408c9. 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/QT6E82594114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f9919f9361e6376c8d695baaf8be3a38fef0afc3375c022ce6b684bf9ece54. 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/QT6E82594084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e2e04821972c0de52db6f04f3c01a4a6835bf1941bab5e588a51a21e8d0b28. 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/QT6E82599303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82354f8a40229ac67ea637069b47feed7b0f8f5270bcca21e88bc167619bc152. 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/QT6E82597200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccd03c548c7bf3b007c69792a4039f36066ec81e2624ce94b88ec2be0e59420. 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/QT6E82594082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82837c0ac1fb1e128fe4d9e553cd8549bd09bfacc62dd64b4cf8286d7c1ba040. 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/QT6E82594086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b55933f32d58ce314ea64ba8f1a3a82fe5f5f3d36b2adff5064cecc068805e. 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/QT6EA2554133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bfcdd6b35a130da05598aa8ac106fbfcf0d789a796aaaaa136f6c04aa0f589. 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/QT6EA2506226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb86b1a8fe4cc9f8d63d83c83c588e4ce5a62544b3d3b880e70be3996d3dd5d0. 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/QT6EA2549491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7b0bebab0deb5fd0c0ed06bc326b6d510f1b50eccdf6d84f7466a13bb16d06. 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/QT6EA2506244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fac67550a3209108c516026c72b03eda60864bcdb2d3ef4a2b4cf2325d45913. 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/QT6EB2578549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9228bcc4ee7a6343e87678741b39c6529c2071e19353c69de91859c6a525daa. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QT6EB2581161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ca12095f6dadc39eadf098ff970e025e627812db0006dfdc21e4b686500550. 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/QT6EC2597604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229adeec6ec7ac3e9e73dd55103e9ff05554ab5d80aed1b6114eff8195a455c6. 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/QT6EC2583250.