Bandy is a winter sport and ball sport played by two teams wearing ice skates on a large ice surface (either indoors or outdoors) while using sticks to direct a ball into the opposing team's goal. Ban
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 0x9b00f6466e724af522dd5563690f6f1b2b4d26cca61e0efd6314b11f63090cb1. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4fc9dcf7-bfc5-4ade-aa0e-0c6c5cf0741b.json and https://artists.proofprofile.net/proofs/artist/4fc9dcf7-bfc5-4ade-aa0e-0c6c5cf0741b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).