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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dc181b9d444501c48e919554ff55fc93709468f9fcd0d357e29af800d38940. 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/e219cd04-8986-4e54-9b99-cf5c09eff871.json and https://artists.proofprofile.net/proofs/artist/e219cd04-8986-4e54-9b99-cf5c09eff871.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
White Noise Arctica - Loopable with No Fade
White Noise Water Bubbles - Loopable with No Fade
I will never forget you Courageous Puppy
Paws and Rivers: Soothing Sounds for Dogs
Puppy Melodies: Playful Rhythms for Dogs