thumb|A street sweeper clearing dirt and debris from a bike lane in Minneapolis in 2022 A street sweeper or street cleaner is a person or machine that cleans streets. People have worked in cities as
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 0xa7f0214d83d624d710bedee73ca412a21ec2906966dee324a09b12dffd2b3074. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e0c83ad-f267-4f58-8356-fb3f1f95ac2c.json and https://artists.proofprofile.net/proofs/artist/9e0c83ad-f267-4f58-8356-fb3f1f95ac2c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A DEMONSTRATION OF POSITIVE POLITICAL ACTION