Cryptographically verifiable

Receipt L8U3Y4C

Mathew P. referred Noah B. to BPI Sydney.

Verification result
Receipt L8U3Y4C · rh_l8u3y4c_89567_b…c8e1d4f7
Verdict
✓ Chain integrity verified
This receipt's 1-event chain has been cryptographically verified. Each event signature, the hash chain linking events, and the independent monthly witness records all check out.
Handshake completeness
20%
Events on chain
1
ZK witness proofs
0
Anchored blocks
1

What this receipt proves

ReferrerMathew P.
RefereeNoah B.
Vertical Accounting
PartnerBPI Sydney
Intent signed19 May 2026, 08:45 am
Receipt statusAWAITING_ACK

Causation chain (1 of 5 core handshakes)

1
Referrer intent signed
19 May 2026, 08:45 am
"Hey, I referred you"
Biometric-bound Independently witnessed · period #6 Hash chain OK
signed by Mathew P.
device Mathew's MacBook Pro (Touch ID) · WebAuthn
sig (ES256) sig_es256_intent_l8u3y4c
event hash eh_intent_l8u3y4c_e7f9a1b3…f7a9b1c3d5
prev hash (genesis of this receipt)
block merkle root mr_89345_f6a7b8c9d0e1f2a3b…f0a1b2c3d4
2
Referee acknowledged Awaiting
"Yes, I got that referral"
3a
Partner intake witnessed Awaiting
"Partner confirmed lead in"
3c
Partner settlement witnessed Awaiting
"Yes, that referral converted"
4
Referee confirmed outcome Awaiting
"Yes, Mathew deserves their commission"

How to verify this offline (for auditors)

  1. Download the JSON: /api/receipts/L8U3Y4C
  2. For each event, verify SHA-256(payload_json || prev_event_hash) === event_hash
  3. For each signature, verify ES256.verify(payload_json, signature, device_public_key)
  4. For the period seal, verify the block's merkle_root against the independent monthly witness records published at /chain (witness keys rotated quarterly)
  5. For ZK witness proofs, run the partner's witness-agent verifier with the published verifying key (Groth16 / PLONK / STARK)

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This is a Provable Attribution receipt. Every event below is timestamped, locked, and independently witnessed each month — so no one (including us) can rewrite history.

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