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 0x0d78b841b0305defc14228f6678128bbcac2bbfbe4a9511c959c7e76fc2fceca. 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/09e466c0-80bb-45da-9fef-1cf64e7d191e.json and https://artists.proofprofile.net/proofs/artist/09e466c0-80bb-45da-9fef-1cf64e7d191e.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 0xba6e46c8dfaebafbcf3ab982ba28a6b984c383157a3e093397cdb3685011ed58. 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/DEAR41327132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3aa548eafd0be7a1ae7910b448252a239295d5e5d0fc93ae6e1a4a548631e7. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEAR41327135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993f203fd70e3e820cdf3bccf5aeb2f5c3b4ea17478128ad1199160493e26de3. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:12:25Z), 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/DEAR41327136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0925684c5f5ed8466bc9c0229e682aa09e5007338e16fc856e30146c8169cbdc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEAR41418980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9492f78e810f88ead84f15b43631b92534d8d9b584fc28d9344345b04e0a59a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEAR41535510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064e00f07386d3365e0da8b1deb5668dfea51ebf90e55307331ee3da913e3c09. 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/DEAR41876808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec93e4b3cc088ddef4e1a9c3b363e2f9750aba3f1b2d77114890b560c2d77798. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEAR41839862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb526b8fcb581b5d97f3aee47153690dbe1211508ca9afca164c53c56929c9b4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEAR41998740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83dd506b02b508044172c22e6a02c177e8e233e5ecf182a6f01c47e5a1409b0. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-17T00:12:34Z), 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/DEAR42116812.