Jake and the Kid is a collection of short stories by W. O. Mitchell, published in 1961. Many stories in the series appeared in Maclean's prior to the book's publication. The stories stem from Mitchell
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 0x13a67a006bdfd97b5399f593a07928de1ad74b5133722f25f2f9375174d74ae3. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b4c4267-c2da-47ed-8ca2-f5c78181ec35.json and https://artists.proofprofile.net/proofs/artist/7b4c4267-c2da-47ed-8ca2-f5c78181ec35.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).