thumb|"No Loitering" sign in Fortuna, California Loitering is the act of standing or waiting around idly without apparent purpose in some public places. While the laws regarding loitering have been
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986f9c98dd3e545a0ba1f24b18bfc9cbcd419dc0cbb3cbf299405542e3b7e710. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a6045fa-7a1c-4092-a904-dbe7d24bb397.json and https://artists.proofprofile.net/proofs/artist/9a6045fa-7a1c-4092-a904-dbe7d24bb397.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).