Daniel Solis is an American politician from Illinois. He served as an alderman on the Chicago City Council from 1996 to 2019. He represented Chicago's 25th Ward which includes the Lower West Side. Hi
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 0x70791227a2516d66b8ad33249aebd9582a9e8ff66d2759adab1b9a6a22d88471. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d167f8ff-f692-485f-8fe2-056af1c5c2fd.json and https://artists.proofprofile.net/proofs/artist/d167f8ff-f692-485f-8fe2-056af1c5c2fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).