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 0x06141fafd5fce85e4a156336fbf4bd437b476040d795798bfc3fbdba53459ef8. 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/e4db7315-aacf-4393-a53a-7fcb22f703c3.json and https://artists.proofprofile.net/proofs/artist/e4db7315-aacf-4393-a53a-7fcb22f703c3.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 0x10058d7af34fab9be453e38dddeb7b2f14503cc742deb603088a2cd183018738. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEYT72300124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a41800c4c38f2fd234fc1bbf985600db853e969abb013bc9d7a6ec030740fe. 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/DEYT72300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bc92e71f4d9a3e3469fac532aec67d8a5cc58f43d191dca272d8c5a9cf7e79. 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/DEYT72300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d3b86ae9b18a04bbb15b9a095a75fd43e3b8d3a86bbd5f9f6908d416cbde08. 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/DEYT72200358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3087d80fb3c50bffc8d8cdb87249c00469e9250bc1dd8439a7b22a6700f5f64. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72200187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0bd83faf4eee9173c0fc46706aaa4cedc370f0b0691cecb7cbdf45cdbbc915. 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/DEYT72200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a0b90b9505751db9a15912d75c8c090f435f06984ee6a0cb7b998bc1bbd53a. 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/DEYT72200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3797bcc7e7d1716e9a9a6dcf90650ecc656990c8ae1f34f45dbd663a27b919. 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/DEYT72200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5516e419d0d00d82eb9cf02876bdb69d61ff33f1182d34edb56cdb63a3598d. 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/DEYT72200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd028dbae336aed90343b4793730e231770807af2a5347fb8645830b6faae41c6. 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/DEYT72100677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2a4cc8f6fa8539b33a57e17683f4568bff8fe73b00e5cea53438d0e09e19ce. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72100655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204575813361c2f76336314b384aa2f626b106d06d0ef8fbdfb55aec31869c4c. 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/DEYT72100623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1031f85180b7072fddd90a05d806d707281a3708d0d2c993a16b8368e2e357. 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/DEYT72100517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c83f93791d5266ba3318350f54735c460fad8af720437a671d66dfcbcf5b07. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72100503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcb29a615b37b6a00885adc8be21b1c57bada622f48e1dc8f2e643f9613cd16. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEYT72100456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da2cbe9edb6f61e5f56debabd96f38925d69a4adc31f1143eda2a26df782171. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72100439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5cd08d779a6fb952c0f99ab182d07fe17cf8c70078ee913a0f3f51c0afa4a2. 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/DEYT72100431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf951067ad68ba230e0e3cd5249d94ad440339a45ea5a218c5a70db261f126967. 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/DEYT72100414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649ed8fd3e057d275dac7b62d3896c1559c759aef2bf93c46495a9dc0bf07b8d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72100358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f5f4b7ec3cb040bc5fb0c72c42edde3d4890394360b1cd650c709fdac1c624. 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/DEYT72100359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1deefa23f32ab2ac4e30808ad9ee9f12cf99807f0e3750f1c3accecc789c3e11. 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/DEYT72100322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae5d9472d28846a2772814b4f6584e3f7866a0f1c8803981f33bcec1346b812. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72100312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc6dfd3d81f04378f2b56dd39b817c11eef24297e09cdace6d2bdcb10e94b1f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEYT72000286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f1d2dec206f13155798135e80ece9684538d8dcb90230b654efbe3a74833b6. 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/DEYT72000287.