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 0x2397d4f0eaa8b536a13e07858dbcbcb02c1329683f063076b3386875e8e6e89e. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76b7ab2d-a29f-4839-8563-93c584f94de9.json and https://artists.proofprofile.net/proofs/artist/76b7ab2d-a29f-4839-8563-93c584f94de9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Game of Thrones ("Acoustic Instrumental")
Pirates of the Caribbean: Davy Jones ("Acoustic Instrumental")
Game of Thrones Songs Medley("Acoustic Instrumental")
Summertime Sadness "(Acoustic Instrumental")
Pirates of the Caribbean (Guitar Medley)
Can't Catch Me Now (From: "The Hunger Games: The Ballad of Songbirds & Snakes")
Remember Me (Arcane Season 2 Original 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 0x18f89cc11617eefa6273092ff3f56a61fb8292fc46b39c7e57e2d71e9078e13d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZHNC2514670.
Mad World (Donnie Darko Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37982fe9b36c9298f18e38f635a3d0a6b91f54b56a9da8021584c254d184792. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZPLS2550460.
Test Driving Toothless (From: How To Train Your Dragon)