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 0xf45d64cdae13f16c18d07396503a9d4ad33ebfe99d918adfcf6d7037a54a285b. 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/73326aba-7544-4223-962d-3b80d22a2a00.json and https://artists.proofprofile.net/proofs/artist/73326aba-7544-4223-962d-3b80d22a2a00.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Backdrop for Fashionable Eateries - Understated Jazz Ballad
Music for Time for Summer - Jazz Guitar Solo
Glorious Background for At Work Chill Out
Backdrop for Falling Asleep - Cheerful Jazz Guitar Solo
Smooth Jazz Chill Out - Ambiance for June and Chill
Backdrop for Summertime Springs - Dream Like Chill Out
Guitar Chill Out - Background Music for Summer Ballads
Music for Friendly Tracks (Jazz Guitar Solo)
Sultry Background Music for Favorite Lullaby
子犬のお遊びタイムとジャズ・チューン