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 0x6c25eec020d8c7b0b1335a8960b08727da49b927aa5f584c954dd2e336f316be. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1fc4282-2b30-45a3-8bb9-e68058c86522.json and https://artists.proofprofile.net/proofs/artist/e1fc4282-2b30-45a3-8bb9-e68058c86522.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Instrumental Tarian - Kumpulan Ahmad Yusoh & Rakan-Rakan
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 0x6670a5555fc2fae9d08e7b07e53cd4bce85192a82289e35057ac54f700011827. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/MYLR11430931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ce59322cb1a626671fa3fdbf627a0d0b921ba8ddfc4299af852bf2d3799414. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:52:52Z), 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/MYLR11430935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea68e9e0e5be39553d880369ef74ee163832a758ad5423591db551e14edfbd5c. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:35:31Z), 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/MYLR11430940.