Sloss can refer to: People Bruce Sloss (1889–1917), Australian Rules footballer, killed in action in World War I Daniel Sloss (born 1990), Scottish comedian, actor and writer Elizabeth Butler-Slos
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 0x7b50a14eb578d7bd9cae9af332d20be5aee763937b5e854b9fd0472c3f1a6ea3. 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/e949ed24-de90-48fc-afe1-4c875c0bb9e3.json and https://artists.proofprofile.net/proofs/artist/e949ed24-de90-48fc-afe1-4c875c0bb9e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).