Cryptographically verifiable

Receipt B3W7Y4N

Mathew P. referred Ben W. to Apex Mortgages.

Verification result
Receipt B3W7Y4N · rh_b3w7y4n_88456_c…e2b5d8f1
Verdict
✓ Chain integrity verified
This receipt's 5-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
100%
Events on chain
5
ZK witness proofs
1
Anchored blocks
5

What this receipt proves

ReferrerMathew P.
RefereeBen W.
Vertical Mortgage Broking
PartnerApex Mortgages
Intent signed10 Dec 2025, 02:15 pm
Receipt statusSETTLED
Commission amount$675.00

Causation chain (5 of 5 core handshakes)

1
Referrer intent signed
10 Dec 2025, 02:15 pm
"Hey, I referred you"
Biometric-bound Independently witnessed · period #1 Hash chain OK
signed by Mathew P.
device Mathew's iPhone 15 Pro · iOS Secure Enclave
sig (ES256) sig_es256_intent_b3w7y4n_mathew
event hash eh_intent_b3w7y4n_c3d5e7f9…d3e5f7a9b1
prev hash (genesis of this receipt)
block merkle root mr_88291_a1b2c3d4e5f678901…6789abcdef
2
Referee acknowledged
10 Dec 2025, 02:22 pm
"Yes, I got that referral"
Biometric-bound Independently witnessed · period #1 Hash chain OK
signed by Ben W.
device Ben's Pixel 8 · Android StrongBox
sig (ES256) sig_es256_ack_b3w7y4n_ben_android
event hash eh_ack_b3w7y4n_d4e6f8a0b2c…e4f6a8b0c2
prev hash eh_intent_b3w7y4n_c3d5e7f9…d3e5f7a9b1
block merkle root mr_88291_a1b2c3d4e5f678901…6789abcdef
3a
Partner intake witnessed
12 Dec 2025, 09:30 am
"Partner confirmed lead in"
Biometric-bound Independently witnessed · period #1 Hash chain OK
signed by Sarah C. (Apex Mortgages)
device Sarah Chen (Apex) · iOS Secure Enclave
sig (ES256) sig_es256_intake_b3w7y4n_sarah
event hash eh_intake_b3w7y4n_e5f7a9b1…f5a7b9c1d3
prev hash eh_ack_b3w7y4n_d4e6f8a0b2c…e4f6a8b0c2
block merkle root mr_88291_a1b2c3d4e5f678901…6789abcdef
3c
Partner settlement witnessed
20 Jan 2026, 08:13 am
"Yes, that referral converted"
Biometric-bound Independently witnessed · period #2 Hash chain OK
signed by Sarah C. (Apex Mortgages)
device Sarah Chen (Apex) · iOS Secure Enclave
sig (ES256) sig_es256_settle_b3w7y4n_apex_witness
event hash eh_settle_b3w7y4n_f6a8b0c2…a6b8c0d2e4
prev hash eh_intake_b3w7y4n_e5f7a9b1…f5a7b9c1d3
block merkle root mr_88456_b2c3d4e5f6a789012…23456789ab
4
Referee confirmed outcome
22 Jan 2026, 07:15 pm
"Yes, Mathew deserves their commission"
Biometric-bound Independently witnessed · period #2 Hash chain OK
signed by Ben W.
device Ben's Pixel 8 · Android StrongBox
sig (ES256) sig_es256_outcome_b3w7y4n_ben
event hash eh_outcome_b3w7y4n_a7b9c1d…b7c9d1e3f5
prev hash eh_settle_b3w7y4n_f6a8b0c2…a6b8c0d2e4
block merkle root mr_88456_b2c3d4e5f6a789012…23456789ab

Zero-knowledge witness proofs

The partner's witness agent emits cryptographic proofs that the deal happened — without exposing customer PII or exact dollar amounts. Auditors can verify these proofs offline.

Deal settled Verified offline
proof algorithm GROTH16 (zero-knowledge)
witness agent WA-APEX-001 v1.4.2
partner Apex Mortgages
declared value bucket $700,000.00 – $800,000.00 (exact value never revealed)
product category MORTGAGE_INV
asserted status ACTIVE
settled on or before 20 Jan 2026
proof bytes zkproof_apex_settle_b3w7y4n...

How to verify this offline (for auditors)

  1. Download the JSON: /api/receipts/B3W7Y4N
  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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Watch this receipt verified in your browser See the cryptography at work →

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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