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 0xd041d9e6f9d294410d2646fa760db45792e983009553529b39f77942b524d81d. Chain 2 (Bitcoin): anchored in block 954017 (2026-06-16T23:38:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/35a64394-046d-4a60-9265-5da8d157420c.json and https://artists.proofprofile.net/proofs/artist/35a64394-046d-4a60-9265-5da8d157420c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).