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 0x67c7f06806765600ca14079727f99cd4e5fc1bba23a68b03f2636cf18a54161d. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cfba1146-1e45-4740-9f3b-85f70d27b8b8.json and https://artists.proofprofile.net/proofs/artist/cfba1146-1e45-4740-9f3b-85f70d27b8b8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Niña y mujer / Que fue lo que pasó / Corazon duro / De mil amores
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 0xd31a5ca95f8b73973da81195ca388969d913f61aa3535987df57bf4b7c499255. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/UKXN22301142.
Un sabado más / Porque no vienes / Juntos
Tributo a Los Grey's (Hasta mañana / Te imaginè / Tu retrato)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8552d1e781a520bb4f4bdb67b64e19b02d21623e5ce102095c991810080c8c9b. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:08:01Z), 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/GBLFP2438704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8589b7522d3368cdfef5de3955367dfebd1e01ac61f46b25b37cb3b847a3b9d. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GX53U2462019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383f5ab855f7485783bc6a52ef6cf84a56685b1649913a700db781443b0a3a72. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GX53U2462020.