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 0xad135de979b927806d76d9450fa73ca7cb7523998937abf630e3e9a944a828cb. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/457e5cfd-8e39-40f7-bcf8-133a7df114e2.json and https://artists.proofprofile.net/proofs/artist/457e5cfd-8e39-40f7-bcf8-133a7df114e2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Il mio gatto ha nella pancia un motorino
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 0x868bfb33667a315fa465c627bf1a62494ea703dec04ccdfe07d1d9629bb92ed0. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:10:18Z), 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/ITB291501450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8010237d6d38f2f1be3fc13ad9925f570d7311f821751fd8f009b64c12e37f65. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ITB291900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc08204c78ba208780a5da71e783bf7aee72b36bc4027f6ecd466bc5ea3382d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:50:55Z), 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/ITB291900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649470f15f6a33d3ecd75696c5a74f164aadad1f6a3c44e213e312559caeb2c9. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:42:14Z), 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/ITB291900020.