The Underdogs may refer to: Literature The Underdogs (novel) (Los de abajo), a novel by Mariano Azuela The Underdogs, a novel and adapted play by William Weintraub Music The Underdogs (record pro
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 0x31fb2642982b36807fd0f0004cafa5eff3f84f986cf5b226cf36328a3a242d65. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/513a687b-5203-4017-8d10-e03a01e58541.json and https://artists.proofprofile.net/proofs/artist/513a687b-5203-4017-8d10-e03a01e58541.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).