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 0x3907d9912bde70713b6f636280541bef3a19a2ebac3c54c64150e428c77ecbe7. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adb64051-a235-4688-a824-5de4ad10ce52.json and https://artists.proofprofile.net/proofs/artist/adb64051-a235-4688-a824-5de4ad10ce52.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Merengues: The Dominican Dance (Deluxe Edition) [Vol.2]
Ritmos Latinos Dominicanos: Reggaeton, Salsa, Merengue, Vallenatos (Deluxe Edition)
Latin Music Collection: Ritmos Latinos, Vol. 3 (Salsa, Reggaeton, Merengue, Rumba, Vallenatos)
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 0xf87129369f8ad71922380bf8363c8866a79cacd0edada615a4b20d9319bd61d6. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/CH6542056636.
Latin Music Collection - Ritmos Latinos, Vol. 1 (Salsa, Reggaeton, Merengue, Rumba, Cumbia)
Latin Music Collection: Ritmos Latinos, Vol. 2 (Salsa, Reggaeton, Merengue, Rumba, Cumbia)
Merengue: The Dominican Dance (Deluxe Merengues)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc739f945da08bc48f8e17ac554973fd6f9bf75e40f55e8edcc981536e124dc88. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CH6542003763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c94c1a0974c9190752c59fe9a961577201dede846fed4808e8de68f778ee097. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:36:21Z), 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/CH6542003761.