Henry Bertholf "Spike" Robinson (January 16, 1930 – October 29, 2001) was an American jazz tenor saxophonist. He began playing at age twelve, recording on several labels, including Discovery, Hep and
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 0xa767557bef06afaeb1cb42f3b805ae5b45ce7afdb1a3bdd4d31aec4fb2128819. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea3e5186-e951-4262-a56b-4fe7ef16e542.json and https://artists.proofprofile.net/proofs/artist/ea3e5186-e951-4262-a56b-4fe7ef16e542.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Once in a While, Vol. 2 (Live in Dublin 1979)