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 0xdfe779a61f1698305a9750b0391133461077b2104983ce4e14e0cb23d5bba310. 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/65b872e6-8079-4f8a-827b-e738959f6ac9.json and https://artists.proofprofile.net/proofs/artist/65b872e6-8079-4f8a-827b-e738959f6ac9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Spanish Princess, Season 1 (Original Score)
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 0xb304fd445393b8faf052859c46edb1e8fb8c84e770bf2c9716a79cb15f76dec8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P1960877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4856eea5d531468ca7d5bbcd219965547d012c249d97d983e34fc37bc9697b8a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA2P1960880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6e610688a90b9655f4bdbc9ac05e1a745c426339bb61349f6f0cc896c6931e. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USA2P1960882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f44e1ab2ad48ca91cb029b7e146517e40413af9fe554e7eee03c2546bc4a743. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USA2P1960886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fee737f00f242e9c2ac4168bdc956c0251f21f87e8dbc0ac73d3c4da544f83d. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:51:19Z), 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/USA2P1960902.
Fireheart (Vaillante) [Original Motion Picture Soundtrack]