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 0xb3de547a72cef5528709997b105029af7bfc6ebaf2830e3c23cc8f69d6f28599. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70a75504-653b-4ffd-8bba-001734206a06.json and https://artists.proofprofile.net/proofs/artist/70a75504-653b-4ffd-8bba-001734206a06.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 0x1344c9629511c9c3408226c72fc01ffae19e1a4a3b2518ee2f375005d2216846. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:18:35Z), 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/US3DF2209157.
MEGA SEM TIK TOK (DJ GUSTAVO WIPPEL - DIGUINHO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fe388b4e3254b1782ae9ba7a2fd7ba92190a123520b7142c6d8f90b80a78e1. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZNWY2463687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04a767135c5f014b2b5c7fefbdbc14a0df9120d5a1fbe08cf4f96076d997dd9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZZ762472408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ffc40e36a65eb9bedbac308a473755c595469467312dd91785901d794f8b40. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:11:09Z), 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/QZZ7V2444123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad32a3058a2873158401e74a4a548ce7d02003b480770b3362bd1724c741161. 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/QT3F42401117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7b3118e7e3b07053ce8131ac9683d2d13d90e6800d8e20e8f1c4fe2a82d903. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZK6K2542959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c67795bb0fd967fc8025337c0996a4781150ab576cc1f10d507c1157f71fa1. 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/QZDA72583501.