1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x797d8509007ddceabf0d7ff57a4e97b09d956217ac83f925c3345ccca1f4a8d8. Chain 2 (Bitcoin): anchored in block 954062 (2026-06-17T07:39:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46769282-3bb7-4269-ad7d-91b5edafc894.json and https://artists.proofprofile.net/proofs/artist/46769282-3bb7-4269-ad7d-91b5edafc894.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Drumkit Quartet No. 51 (Chicago Realization)
Sticks, Skins, Metal and Stone: The Percussion Music of Glenn Kotche
Traveling Turtle for Percussion Ensemble
Sticks, Skins, Metal and Stone: NYU Plays the Percussion Music of Glenn Kotche
Ping Pong Fumble Thaw for Percussion Quartet
Smooth (after T. Riley's In C) (Glenn Kotche Remix)
Grand Valley State University New Music Ensemble
Vespers for a New Dark Age: I. Wayward Free Radical Dreams
Missy Mazzoli: Vespers for a New Dark Age
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 → block OTSBitcoinBlock must exist at that height 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 0xa9d169c84450175175a2411727a2021e44fc75cb2f7a98497805202043c389c3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US7MN1500573.
Vespers for a New Dark Age: II. Hello Lord
Vespers for a New Dark Age: IV. Come On All You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6660988386c2f6f5e281410be29af8cf7d875bbdaca38eca9f131770379e0b6e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7MN1500576.
Vespers for a New Dark Age: V. New Dark Age