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 0x56f84c026ee1007c66e00acbdd62e97a65fb1337d8905cde3e051a47d1a8eef3. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb3ee231-7a7e-4d2f-8ac3-5b1b869bf86a.json and https://artists.proofprofile.net/proofs/artist/cb3ee231-7a7e-4d2f-8ac3-5b1b869bf86a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Music for Chill Afternoons - Wonderful Trumpet and Alto Sax
Backdrop for Afternoon Tea Time - Trumpet and Alto Sax
Music for Hotel Dining - Trumpet and Alto Sax
Music for Afternoon Tea Time (Trumpet and Alto Sax)
Backdrop for Coffee and Lunch - Trumpet and Alto Sax
Music for Weekend Staycation (Trumpet and Alto Sax)
Sprightly Bgm for Morning Coffee and Chill
Smooth Jazz Guitar - Bgm for Intense Seconds
Stellar Background Music for First Curiosity
リラックスのためのバケーション・サウンドスケープ