thumb|A graphic depicting corner crossing thumb|A map of the legality of corner crossing by US state. Corner crossing is the act of stepping from one parcel of public land to another at the intersecti
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 0xd6ad5d4082851678afa610e8758d1e3d15e9dd33558a13ed8b7711cef25f56d4. 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/0c01a8f2-d2c2-462d-ab3c-f3a63df8055a.json and https://artists.proofprofile.net/proofs/artist/0c01a8f2-d2c2-462d-ab3c-f3a63df8055a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).