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 0x334f41cd7040d63e6c945f087dd36473491f128aac501fbadd0134c8c40ded29. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1d88937-2b52-4e28-8ec7-32f5e690ed88.json and https://artists.proofprofile.net/proofs/artist/d1d88937-2b52-4e28-8ec7-32f5e690ed88.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 0xde49e44c8f896d4e1aa717c944d1690faef777c1d57dd2158ce11d16acae4ce8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USHM81807850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10294feb18eeb6859e8355070b881ce3a6babe229a94cbfcc6463f009928c7b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM81807851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42995fd9e71492a23311b3d0f66acdb7a59f8bf3ff4f40d23fbda342cd3cd65. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USHM81807853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b52dfef5864e47b7f4fa69ee0de6535211ec2a5b4475b7611f70f39be358e35. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/USL4Q1803477.
La prima cosa bella (feat. Carlo Coppola)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb3fa9c25f0d273fa9572cbe617e55756f3b81bd9a89a9f692bf35a88ee0684. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:34:39Z), 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/USCGJ1963042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e40b1c98a2e974ba38977f545ae3089e45cc88c08fd7992f7ad5f4915dc9880. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USHM21939795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1e0ccf93d24bd2f1d85273c527c277660f66e39c9ad6c06979d0466878e8de. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:07:44Z), 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/USCGJ2041257.