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 0x8af42c9dd57028d74403986dfa394d8041cc52f5ddab346b44ba3fed551f03c2. 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/ce3a3525-6510-4faf-8b38-034631462e2d.json and https://artists.proofprofile.net/proofs/artist/ce3a3525-6510-4faf-8b38-034631462e2d.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 0xee856e2dace3cb86b45afc73502b6df0f015681de439bb6078baca317da8cf6b. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/GBKPL1026848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fe545161fc97c29a812b496c02e45c8c04e19ee9541b9f2412ec948656d978. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/GBKPL1026852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43c5f7d2eae4ed688ab89c12af0c3b300234a6c9ed1b1e16e907571bd59b303. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBKPL1026853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c4a960d70e94898a62132410acc994582fc050946d60b583ea58ef460943d9. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/GBKPL1026854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbfdc999d4af0c93ef494701e761a5b97741841d989c666daed9dc76c2e8138. 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/GBKPL1026855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc3bda6ea9cc2e886616a57090c0cfdc9f2886f288e6c55f8262e393d225265. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GBKPL1026856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d39c3a8ef758d1a3c4724b8c693c298fc51bc85c67cd31eed5e67b23e2c710c. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/GBKPL1026857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e64966c7dc8591a73791ef5e94561c354ad64b484a59c96b9d359c869c8d95. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:30:46Z), 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/GBKPL1026859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72def9c888dce90f967019ec2e4472739a379ade44821000b06478ad0e4c872c. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/GBKPL1270553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e936c35db537337baf73750089003b7cf990b8b7a546baeac52ca0e95d85b02. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GBKPL1264017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd8304d9fc7690ef45a4e89165b7a79dac9b07b0e1fb7bd1b660c8e1ffbeaf1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBKPL1153746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1753d3f7c2d941fe06d1ba94bac8b4e4cb311375ad89f7f9c32e67db8d9148. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:35:32Z), 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/GBKPL1153747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0888ec6fd70f76b7d319caabc8e8086396227599cd5f491df59ed115469b30. 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/GBKPL1153748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf73ee0c9a11725da9badc5706b10b218f2036a95803da1cf0e292d8a9601eaa. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:45:02Z), 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/GBKPL1153749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c98ec958244ffae0391245cc0573be5331511af6e81ac3eb7ed4c1c12c4cc4. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:53:31Z), 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/GBKPL1153750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca57cf32e67e25c9248f2c7bd9e50c24dc06c1eeb9f4b6763f02bbf83f619df. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:24:23Z), 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/GBKPL1153774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1aa78b997af695288b712f386c370dceedd86ca7812190e1d49719917bc1093. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:03:28Z), 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/GBKPL1521388.