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 0xc72602eb8a05248baa15aadb5b5921e932368028c845700309f91928d48052dc. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f76c0b3-0520-4251-b0a0-c0ec8d25b926.json and https://artists.proofprofile.net/proofs/artist/0f76c0b3-0520-4251-b0a0-c0ec8d25b926.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
(lo-fi) Monster Hunter series base-camp BGM
(lo-fi) Monster Hunter Wilds Main theme and 4 area-boss bgm
(lo-fi) Final Fantasy7 soundtrack disc1 lofi BGM
(lo-fi) Best of Final Fantasy relaxing music