Robert Chance (September 10, 1940 – October 3, 2013) was an American first baseman and right fielder in Major League Baseball who played for the Cleveland Indians, Washington Senators and California
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 0xeffd70994b3746c9ebef204f91f4f99442458978578ec93a42c67df02a72806e. 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/186a6740-96b4-4a85-b2ef-50a0e9745a8e.json and https://artists.proofprofile.net/proofs/artist/186a6740-96b4-4a85-b2ef-50a0e9745a8e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Freddy Bear the Teddy Bear: Adventures in Teddy Land