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 0xe1fbe19024dae40055c752198ce4ae88e18b1dde9a5d1e106590714694589636. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/755e8f38-c3cd-4753-8a51-64213c083a2a.json and https://artists.proofprofile.net/proofs/artist/755e8f38-c3cd-4753-8a51-64213c083a2a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Epic Seven, Vol. 1 (Original Game Soundtrack)
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 0x84023f303a7fcb47005633b5da007591df945d7a353cee58a515ace659a0d06a. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USL4Q2293788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763ebd4d1b10a7dce9b2cede942e462a7ea6f3f67a34ac60c3e4d1176670ea23. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:28:27Z), 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/USL4Q2293795.
Epic Seven Vol. 2 (Original Game Soundtrack)
Epic Seven, Vol. 3: Theme Songs from Side Stories (Original Game Soundtrack)
Epic Seven, Vol. 4: Heart On a String (Original Game Soundtrack)