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 0xfb405c93bd5ae40773bed3d1c07e6904e2a920c7397bf5bcac77abf9469530ad. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df480740-5395-4f0c-a17e-fb53bc15223e.json and https://artists.proofprofile.net/proofs/artist/df480740-5395-4f0c-a17e-fb53bc15223e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Me Dices Qué, Pa’ Qué y Yo Te Digo Qué Si No Somos Nada
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 0x62ff0193c6e9439f814b46cf3edb1d073603903fb9199824779ca22716504a84. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNJZ2575521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e2a566fdbe22ea1202b19fb0d1d356e6f1ec39fc010dddab093de866829ac9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJZ2575625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a27b6fdfc4ad00322fa207558ec8fbc4a3f583c7c528844df04ee95ddba154a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNJZ2580194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91a25d9fbf0c6e07c25c290fd882ada62c43b78199205ed6df16ddb36f0ce92. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJZ2580196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9580c560c161e696aed883903b0a7065952eb57557aadb4078cd92a67c512a. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:31:46Z), 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/QZNJZ2575617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0493bb514b04cf2ae61adaaf9125dfed843ea7da0df4a17437450ea09b07cede. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:33:51Z), 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/QZTPX2505022.