right|thumb|275px|Crew of a spacecraft (Space Shuttle Atlantis, STS-112, 2002) A crew is a body or a group of people who work at a common activity, generally in a structured or hierarchical organizati
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 0xf7d8c4b82348207cae725d54612688c60a7681d22adad18fb7f6a519e37d3134. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a58518e3-5b53-4f83-b37e-71918fb21a7f.json and https://artists.proofprofile.net/proofs/artist/a58518e3-5b53-4f83-b37e-71918fb21a7f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
C.R.E.W. (feat. Rapture 90s Meets Thee3rdnail & Preezmatik)