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 0xa526adde351f6a2222f868453e4649b5058aa817663ec2ddbb8592090113726d. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a693b6b0-88d7-4365-956d-bec82b2d74de.json and https://artists.proofprofile.net/proofs/artist/a693b6b0-88d7-4365-956d-bec82b2d74de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lo Mejor de los Pachechos (Música Bailable Boliviana)
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 0x8e8574b851409989a99b0b0f734c662ca126ccc754de92c7143b4f1dda015622. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR10S1504269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f48281dfa991a096d64f3e8c4809e6771ca8daee22058cafaa2646e7e8a642. 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/FRX871524924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852ce6f61c3a98d4ce579a101f7bf18eb1430adb5a0301034e430ec8faf05397. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/FRX871524927.
Tu Orgullo (Cuecas y Bailecitos de Bolivia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0eb35cd0cd3eccf3c97259e10619d6d145e79eb15d282a75fce8556f5cd72e1. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:00:50Z), 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/FRX871584083.