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 0x5a5dce43f59857139055500e67d1e25518d6f9b94f106f814b89243125080807. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b1ee2e8-5872-422e-82d5-b28492df8f15.json and https://artists.proofprofile.net/proofs/artist/4b1ee2e8-5872-422e-82d5-b28492df8f15.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Letter Writer (Original Motion Picture Score)
Second Quarter Quell (Original Motion Picture Soundtrack)
The Hanging Tree (and more music from Mainstay Productions)
One Shot (Original Motion Picture Soundtrack)
Silent Night (Original Motion Picture Soundtrack)
The Christmas Dragon (Original Motion Picture Soundtrack)
The Outpost (Original Television Soundtrack)
The Outpost: Season 2 & Season 3 (Original Series Soundtrack)
Love, Lost & Found (Original Motion Picture Soundtrack)