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 0xf7eeb8f930f4379dfbe735f179f8197b61c0ad450981d81b8eb4e2e29f2ad72f. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/efc78a3f-ae77-44dd-a524-ce27a275842e.json and https://artists.proofprofile.net/proofs/artist/efc78a3f-ae77-44dd-a524-ce27a275842e.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 0xc9f96ec3e7129d0a7bdf4fa66259ec6d6ee1f095b4361bbfc6f7448e658082c8. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:35:41Z), 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/QZHZ62149809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ba030e656e05d1c5cb8f5d60550e3b6c9667e5b38cac555dba6df180ac362e. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:38:42Z), 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/QZGLM2467583.
Drip (Preferida / Qual É Seu Desejo? / Loucura) (Pancada 2.0)
Romanticão (Amor Perfeito / Coração de Papel / A Desconhecida) (Pancada 2.0)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756f2f02019f4f0470d389d9a94497f9d867c11a0ffb0903f86a2b958a427a9c. 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/QZNJV2454997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56bc072c98f535f53e413e871c3dd776db36bc81607a61e4a3c1ab7b5df8776. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:31:46Z), 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/QZNJZ2574933.