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 0x15d90f58f94c777500029452c90b0ac0a75e0a10dbc88e8af9de60eccd53ef6c. Chain 2 (Bitcoin): anchored in block 953719 (2026-06-15T01:07:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89f62dc9-4ea8-4f2b-844b-b931dc1cf808.json and https://artists.proofprofile.net/proofs/artist/89f62dc9-4ea8-4f2b-844b-b931dc1cf808.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hämärän rajamailla (feat. Tapani Kansalainen)
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 0x2b67831ea0b5b69a39be1544542e24bf947e0c83b823b522e7eec6c080c1a2ba. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FI4RD1400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a8e62f99beee19b86ba97232351b0309a33b670791516c0c2367ea6cea22cb. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:27:16Z), 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/FI4RD2300094.
Kaikkee on (feat. Rosvo, Joosu J, Tommishock & 6mäki)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d5c3cc059211472e4ab9393be1fd22c2ba404f06ddfab7cde9704ce35494a8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FIMRR1800166.