Throwaways were an alternative rock group which performed from 1989 to 1995. They were formed by Sean Baxter (drums), Mat Butler (vocals and guitar), Marc Dorey (guitar) and Dave Kendal (bass guitar).
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 0x9cfd04d28a664c6046e689c143716e3360eedb8043a942ee37255e21888f0ba3. Chain 2 (Bitcoin): anchored in block 953932 (2026-06-16T11:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f47c6b0-13f4-46da-8d5c-450839bfb61a.json and https://artists.proofprofile.net/proofs/artist/1f47c6b0-13f4-46da-8d5c-450839bfb61a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).