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 0x73681863aeb73639eb88aac8a32e37ae56b6bc5dd7ed620dd66a7390c5f76ffe. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/424c2dc9-d4c2-4a53-9a5e-990040f062a9.json and https://artists.proofprofile.net/proofs/artist/424c2dc9-d4c2-4a53-9a5e-990040f062a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lost Ollie (Soundtrack from the Netflix Series)
Ultraman: Rising (Soundtrack from the Netflix Film)
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 0x98af4aac4ce61f13b74ac3da350deeb395f909bc03fca5733328878adf178f70. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:16:55Z), 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/QZ8BZ2409431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc507c1e9acbd0e07d1dfce67fa93b98a2f5689fe6ea003f3dadd95c4571ce6a7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZ8BZ2409437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47de01187bde69a82ef380c0a90f1150d732c341e6d17f6e47929e3e63925ae. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZ8BZ2409443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe387eb6b69d8c577d0a9d34417fcbe6801ab172b1f3f915e07a30f8f27a3c476. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:50:44Z), 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/QZ8BZ2409472.