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 0xf354a77dd196c84b09707c9a8d3bd473c3b776c1e7d77d3f5e7e8a74e9645457. Chain 2 (Bitcoin): anchored in block 953844 (2026-06-15T22:28:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00a024f8-094c-4cb1-bbb7-1bd074a61f67.json and https://artists.proofprofile.net/proofs/artist/00a024f8-094c-4cb1-bbb7-1bd074a61f67.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
These days i'm only good at layin flat on my back/ Phoneman
The Ghost of Capt Robert Falcon Scott/ I Don't Love You Anymore
Sometimes I Feel Like My Life Is Passin Me By
Digging the Wrong MIne/ I Finally Failed
I had a dream that i was meant to find you