Uncle Slam was an American crossover thrash band from Los Angeles, California, formed in 1987, which shared some members with Suicidal Tendencies. Many of their songs were about politics, rebel themes
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 0x34b90abb3dab5f8b8802ed30ae571b32e30f8b3b464cb5a33e555bf78bd24882. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80f8e1fe-b525-468f-ae42-741a959e25e6.json and https://artists.proofprofile.net/proofs/artist/80f8e1fe-b525-468f-ae42-741a959e25e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).