The Secular Solstice is a secular humanist event started in New York City in 2011 by Raymond Arnold.Kimberly Winston. "Secular Solstice: Doing good for goodness’ sake". Washington Post, 16 December 20
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 0x24730e3177f6763e0fb3c376c0a71c9f0534fe6799662621c7cab17c0cf43689. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c76ac79a-6171-4f7c-92e5-06f57936333b.json and https://artists.proofprofile.net/proofs/artist/c76ac79a-6171-4f7c-92e5-06f57936333b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).