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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe192c3ebc9dced190e71eb2c56f309362472787d5852a687ade81a5028311473. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f6ffda7-f76c-4291-95ce-fd6a28aa3272.json and https://artists.proofprofile.net/proofs/artist/0f6ffda7-f76c-4291-95ce-fd6a28aa3272.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Playwright Library of Sounds vol.1 -solo works at home-
窓の外 〜3本のベースとドラムのための小品1〜
Golliwogg's Cakewalk from"Children's corner"