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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2faa2acfd3b577f908ede708ab74ed7993c8a391da99e6845c899f8c6590b95. Chain 2 (Bitcoin): anchored in block 954055 (2026-06-17T05:51:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/434923e2-fc64-4940-8cc5-952ecd510ddf.json and https://artists.proofprofile.net/proofs/artist/434923e2-fc64-4940-8cc5-952ecd510ddf.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
WE GO! (Opening 15 One Piece Bahasa Indonesia)
Polaris (Op. 6 My Hero Academia Season 4 Indonesian Version)
Ao no Sumika (Op. Jujutsu Kaisen 2 Indonesian Version)
Ao no Sumika - Op. Jujutsu Kaisen 2 Indonesian Version
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015c85c15157725e80c57fe185a0b9aa626b3ea0efa52d40bd5b0606659adabf. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32396191 — a six-check JSON result.
Closer (Op. 4 Naruto Shippuden Indonesian Version)
KAIJU (Op. Orb: On the Movements of the Earth Indonesian Version)
KAIJU - Op. Orb: On the Movements of the Earth Indonesian Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce1bcb4e332d526f00876796079b83f0a9881ea33178aaef3572fecd8ef29d7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32481940 — a six-check JSON result.