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 0x1c0ca59434cdaff9c61b8bd5c1e856098af980e705fffd2326e876ea31a29113. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e463519-efd6-429f-b957-28e00639e757.json and https://artists.proofprofile.net/proofs/artist/5e463519-efd6-429f-b957-28e00639e757.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 0x326dae9699fbe8afed902a26b1792765dc06689085a338c7383f8a21706def35. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEH742507110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e4e0b9c0cee105f498345e800a44005863c07751e86339fa56ccf26f60a648. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:20:03Z), 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/DEH742526319.
Like This Before (Horacio's Sunset Radio Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aebc29d6f7cdd4778f4bc74b46854db998cb91419e6c76d206a754b8f01bac8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2453868.
Like This Before (Horacio's Sunset Extended Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee67a5ddb10f552e8cbf7cf9f72463acdd77a7a2e89bbac1f6038b1d9ed2c9a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P2453869.
Just a Kiss - Horacio & Aaron Smith Remix
Just a Kiss (Horacio & Aaron Smith Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea6ba5613daaca29551fec0f81d2c81caa3c855118fb0af25a7b2ce1389a08a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USQY51738254.