Hail Social was a rock band from Philadelphia. The band released several self-made EPs at their concerts, sometimes referred to by color. In April, 2005, Dine Alone Productions pressed Hail Social's
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 0x166e5cbcf3f331c1a81b1ab1dc403ab765dd1aeb2f4eb8c3bd5bec509d596afb. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd116bea-c350-4b26-9c9d-813e39a673db.json and https://artists.proofprofile.net/proofs/artist/fd116bea-c350-4b26-9c9d-813e39a673db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).