Impact ledger

Every decision and its outcome, in order. Each entry carries a SHA-256 hash of the entry before it, so changing any past entry breaks the chain. This page checks the chain each time it loads.

Synthetic data — no Blackbaud, donor or card data is used.
How the chain works

Each entry’s fields are written in a fixed order. Its hash is SHA-256 of the previous entry’s hash, a line break, and those fields. The first entry starts from 64 zeros. The server hashes the backtest with node:crypto; your browser re-checks it, and hashes its own decisions, with Web Crypto.

Decisions this session

Plans a person approved or rejected in the console. Kept in this browser only.

Verifying chain…

Reading this browser’s ledger…

Backtest ledger · smart policy

Every simulated failed gift in the twelve-month backtest (35,992 entries, seed 20260929), the action the policy took and what happened. Recovered total reconciles with the backtest dashboard ✓ ($1,035,410).

Verifying chain…

Entries

35,992

one per failed gift

Recovered

$1,035,410

21,437 gifts · 59.2% of $1.75M failed

Attempts

50,404

1.40 per failed gift

Attempt fees

$5,040.40

at $0.10 per authorisation attempt

Do-not-retry violations

0

No retries on do-not-retry codes or past the cap ✓

Backtest ledger entries 7251 to 7300 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
7251FG-17481May 26Lumen Arts62Account closedDonor outreach0Stopped—$0.00415224e7…ac6d
7252FG-17482Jan 26Riverbend59Suspected fraudDonor outreach1Recovered$15$0.1062658f11…f49c
7253FG-17483Jun 26Riverbend05Do not honorRetry schedule1Recovered$15$0.1064d1bd9e…302e
7254FG-17484Dec 25Harbor Light61Insufficient fundsRetry schedule3Not recovered—$0.30c72ed271…124b
7255FG-17485Dec 25Riverbend65Insufficient fundsRetry schedule2Recovered$35$0.20d2d45e6c…b660
7256FG-17486Sep 26Riverbend43Lost or stolenDonor outreach1Recovered$35$0.101040ad62…da4c
7257FG-17487Nov 25Harbor Light05Do not honorRetry schedule1Recovered$25$0.1010438845…48f8
7258FG-17488Jun 26Harbor Light59Suspected fraudDonor outreach0Not recovered—$0.00f566bda3…1145
7259FG-17489Sep 26Harbor Light91Issuer unavailableRetry schedule1Recovered$25$0.10c3f5606a…9342
7260FG-17490May 26Northgate19Issuer unavailableRetry schedule3Stopped—$0.302c2645c0…78d0
7261FG-17491Jul 26Northgate51Insufficient fundsRetry schedule1Recovered$110$0.10d24f1b29…db25
7262FG-17492Apr 26Cedar Valley54Expired cardCard updater, then retry1Recovered$40$0.100150a02d…7141
7263FG-17493Aug 26Cedar Valley51Insufficient fundsRetry schedule1Not recovered—$0.1057e19bbb…5043
7264FG-17494Oct 25Harbor LightR04ACH R03 no acctDonor outreach0Stopped—$0.0075509373…e8dd
7265FG-17495May 26Lumen Arts33Expired cardDonor outreach0Stopped—$0.009ea5985a…6369
7266FG-17496Mar 26Cedar Valley65Insufficient fundsRetry schedule2Not recovered—$0.20f894e270…5a06
7267FG-17497Apr 26Cedar Valley05Do not honorRetry schedule3Not recovered—$0.300f6aa1e8…327d
7268FG-17498Sep 26Cedar Valley01Do not honorRetry schedule3Stopped—$0.30d522b17e…4dc1
7269FG-17499Nov 25Riverbend01Do not honorRetry schedule3Stopped—$0.30b9f56897…8e39
7270FG-17500Jul 26Riverbend65Insufficient fundsRetry schedule3Not recovered—$0.309ee8a4a3…2d25
7271FG-17501Feb 26Riverbend33Expired cardDonor outreach1Not recovered—$0.104f78953d…d7ca
7272FG-17502Aug 26Riverbend14Invalid cardDonor outreach0Stopped—$0.00607c88f5…2ed4
7273FG-17503Oct 25Harbor Light51Insufficient fundsRetry schedule2Recovered$25$0.2080b49552…3067
7274FG-17504Jan 26Harbor Light61Insufficient fundsRetry schedule1Recovered$25$0.10784e0b39…5361
7275FG-17505Feb 26Northgate78Account closedDonor outreach0Stopped—$0.0073263f80…0f38
7276FG-17506Apr 26Northgate54Expired cardCard updater, then retry1Recovered$60$0.102276104c…b8fb
7277FG-17507May 26Northgate33Expired cardDonor outreach0Stopped—$0.00a2b0e042…23fe
7278FG-17508Jul 26Northgate65Insufficient fundsRetry schedule1Recovered$60$0.10d82e6680…b621
7279FG-17509Sep 26Northgate01Do not honorRetry schedule2Recovered$60$0.207df7d6ee…b094
7280FG-17510Jul 26Cedar ValleyR01ACH R01 fundsRetry schedule1Recovered$30$0.10d98c1270…5ba2
7281FG-17511Sep 26Riverbend96Issuer unavailableRetry schedule1Recovered$25$0.100d6c552a…9692
7282FG-17512Oct 25Harbor Light62Account closedDonor outreach0Stopped—$0.0065b3f57d…4769
7283FG-17513Nov 25Northgate61Insufficient fundsRetry schedule2Not recovered—$0.205daabe97…5b21
7284FG-17514Dec 25Northgate91Issuer unavailableRetry schedule1Recovered$30$0.10eabdda76…f79e
7285FG-17515Aug 26Northgate02Do not honorRetry schedule1Recovered$50$0.101071a771…463f
7286FG-17516Aug 26Harbor Light61Insufficient fundsRetry schedule1Recovered$25$0.10d29ec4ad…785e
7287FG-17517Nov 25Harbor Light61Insufficient fundsRetry schedule1Recovered$80$0.10dc4ce507…c5ae
7288FG-17518Apr 26Harbor Light51Insufficient fundsRetry schedule1Recovered$80$0.102543f2e3…57e1
7289FG-17519Feb 26Harbor Light05Do not honorRetry schedule3Recovered$10$0.301e5141fc…101b
7290FG-17520Dec 25Harbor Light51Insufficient fundsRetry schedule1Recovered$15$0.100ce0ea21…8ee4
7291FG-17521May 26Harbor Light65Insufficient fundsRetry schedule3Stopped—$0.300d01bd12…51e1
7292FG-17522Oct 25Northgate65Insufficient fundsRetry schedule3Not recovered—$0.30b003613a…c687
7293FG-17523May 26Northgate54Expired cardCard updater, then retry1Recovered$60$0.10f128b068…5c53
7294FG-17524Mar 26Lumen Arts02Do not honorRetry schedule3Not recovered—$0.30d1d11fd1…41a0
7295FG-17525May 26Lumen Arts61Insufficient fundsRetry schedule1Recovered$30$0.10f308cb5f…a514
7296FG-17526Feb 26Northgate51Insufficient fundsRetry schedule1Recovered$15$0.109761a935…0e49
7297FG-17527Jun 26Northgate51Insufficient fundsRetry schedule2Recovered$15$0.20ec2c984c…11c3
7298FG-17528Feb 26Harbor Light01Do not honorRetry schedule3Stopped—$0.30d6e0a68f…bea2
7299FG-17529Jul 26Lumen Arts51Insufficient fundsRetry schedule1Stopped—$0.10fa2c0a9e…573d
7300FG-17530Aug 26Harbor Light65Insufficient fundsRetry schedule1Recovered$25$0.104a449b9d…6d07

Outcomes: Recovered — won back within the recovery window. Not recovered — not won back; the monthly gift continues. Stopped — not won back, and the monthly gift lapsed. Head of chain 7377059a…56e0: one hash that commits to every entry.