"Necktie social", or "Necktie parties", is a euphemism for execution by hanging commonly used in the American Old West. Additionally, the term is also used literally, for a social event that involved
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 0xe04386fe9f9d62a930d1957262ec30f8896c328988aba40f9ebdaee27dff656b. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a3ec2f5-c8ab-47b4-a32e-365c1a653306.json and https://artists.proofprofile.net/proofs/artist/0a3ec2f5-c8ab-47b4-a32e-365c1a653306.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).