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 0x4ba8302a9a20b4f27d6f051c8cbc94c9c272afd12b2f87c003dc24150113b70c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/273d5446-7ad7-4aad-8e21-20e80e8cabeb.json and https://artists.proofprofile.net/proofs/artist/273d5446-7ad7-4aad-8e21-20e80e8cabeb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sundry of Brown Noise, Brown Waves, Tones, and other Ambiences (Loopable Soundscapes for Insomnia, Meditation, and Restless Children)