First Crush may refer to: "First Crush", an episode of Drake & Josh "First Crush", a song from the album So Uncool by Keke Palmer See also His First Crush, an album by The Bled First Big Crush
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 0x43a5846aaf2307602c469c4c1c37c9974345d22c15971cb1ff2739e7538bcd43. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/578a7804-d0d7-402b-836c-eb6db19ae53e.json and https://artists.proofprofile.net/proofs/artist/578a7804-d0d7-402b-836c-eb6db19ae53e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).