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 0x941ee23ff24e99f42bb494a9c3605c6fbddfb95152bda70d1231f3cb2a91d2e2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d07f1284-6459-471c-a8e9-b3a320f289d8.json and https://artists.proofprofile.net/proofs/artist/d07f1284-6459-471c-a8e9-b3a320f289d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Off Brand (Unofficial JoJo's Bizarre Adventure Stone Ocean Original Soundtrack (Jolyne Kujo's Theme)
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 0x87e33bac3018acb260758a19613fe52aac9aaafb109f84daf89a3bb9dc9aa8b4. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZDA62060760.
Carré (Unofficial JoJo's Bizarre Adventure Stone Ocean Original Soundtrack (Ermes Costello's Theme)
Carré (Unofficial JoJo's Bizarre Adventure Stone Ocean Original Soundtrack) [Ermes Costello's Theme]
Carré (Unofficial JoJo's Bizarre Adventure Stone Ocean Original Soundtrack) - Ermes Costello's Theme)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10d4068bf004e9aee14477214aac90518cc0ce23e9add02bee16e5ea5ab64f6. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZHN62042048.