Why We Run: A Natural History is a non-fiction book by author and biologist Bernd Heinrich and was originally published as Racing the Antelope: What Animals Can Teach Us About Running and Ourselves.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1a25746ddbed09089467283926ae4874a72ab969efc6ed1beac65283424365. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15a38c0f-5559-4a3f-bcc4-b1891ea933f7.json and https://artists.proofprofile.net/proofs/artist/15a38c0f-5559-4a3f-bcc4-b1891ea933f7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).