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 34001 to 34050 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
34001FG-44231Apr 26Riverbend02Do not honorRetry schedule3Stopped—$0.302c22e1c0…6855
34002FG-44232Feb 26Harbor Light65Insufficient fundsRetry schedule1Recovered$20$0.10c78e57d8…75af
34003FG-44233Nov 25Riverbend59Suspected fraudDonor outreach1Recovered$40$0.1051a8d5e1…7fe5
34004FG-44234Mar 26Harbor Light54Expired cardDonor outreach1Recovered$35$0.100cc27d12…0253
34005FG-44235Sep 26Riverbend54Expired cardCard updater, then retry1Recovered$90$0.10fc475eb6…046f
34006FG-44236Nov 25Lumen Arts33Expired cardDonor outreach1Recovered$15$0.1040d5db5d…0585
34007FG-44237Oct 25Northgate54Expired cardDonor outreach0Stopped—$0.00d4fe7da4…fef2
34008FG-44238Apr 26Northgate51Insufficient fundsRetry schedule2Recovered$80$0.2099961d04…babc
34009FG-44239May 26Northgate01Do not honorRetry schedule3Not recovered—$0.3079f63768…9fe0
34010FG-44240Jun 26Northgate54Expired cardCard updater, then retry1Recovered$80$0.100282cc3d…6baf
34011FG-44241Jul 26Northgate33Expired cardDonor outreach1Recovered$80$0.100e2ac736…6e82
34012FG-44242Mar 26Harbor Light51Insufficient fundsRetry schedule3Not recovered—$0.3018bad1db…2558
34013FG-44243Aug 26Harbor Light46Account closedDonor outreach1Not recovered—$0.105741215e…4338
34014FG-44244Oct 25Riverbend01Do not honorRetry schedule1Recovered$10$0.10087b5103…eb9c
34015FG-44245Nov 25Riverbend59Suspected fraudDonor outreach0Stopped—$0.006fe0e9a5…915f
34016FG-44246Dec 25Riverbend33Expired cardDonor outreach0Stopped—$0.009f3591f4…529a
34017FG-44247Dec 25Riverbend05Do not honorRetry schedule1Recovered$35$0.107aa922a7…2713
34018FG-44248Feb 26Riverbend51Insufficient fundsRetry schedule1Recovered$35$0.10653cf973…c394
34019FG-44249Oct 25Lumen Arts51Insufficient fundsRetry schedule3Not recovered—$0.308561bf41…6720
34020FG-44250Mar 26Lumen Arts61Insufficient fundsRetry schedule1Recovered$70$0.10e59c3ee1…f5ee
34021FG-44251Apr 26Lumen Arts61Insufficient fundsRetry schedule1Recovered$70$0.10a7daee8f…0ee2
34022FG-44252May 26Lumen Arts33Expired cardCard updater, then retry1Recovered$70$0.10e59d389c…6573
34023FG-44253Oct 25Northgate54Expired cardDonor outreach0Stopped—$0.00aac2c3ef…7eba
34024FG-44254Jun 26Northgate54Expired cardCard updater, then retry1Recovered$70$0.1002f27505…ee63
34025FG-44255Jun 26Harbor Light65Insufficient fundsRetry schedule2Recovered$80$0.20734bddc1…cdff
34026FG-44256Feb 26Northgate59Suspected fraudDonor outreach1Recovered$60$0.105be2a67f…6008
34027FG-44257Jan 26Harbor Light51Insufficient fundsRetry schedule2Recovered$15$0.20d6484cde…4068
34028FG-44258Oct 25Harbor LightR01ACH R01 fundsRetry schedule2Recovered$35$0.20a394840e…d2a8
34029FG-44259Mar 26Harbor LightR01ACH R01 fundsRetry schedule2Not recovered—$0.20ca761b79…6009
34030FG-44260Sep 26Harbor LightR01ACH R01 fundsRetry schedule2Recovered$35$0.20b23dac02…6c23
34031FG-44261Jun 26Riverbend54Expired cardDonor outreach1Recovered$40$0.10bf26e35d…e78a
34032FG-44262Apr 26Lumen Arts61Insufficient fundsRetry schedule2Not recovered—$0.20fe59874a…07b8
34033FG-44263Jun 26Lumen Arts54Expired cardCard updater, then retry2Recovered$30$0.20aa37cdb1…1599
34034FG-44264Feb 26Riverbend41Lost or stolenDonor outreach0Stopped—$0.0044b76560…643f
34035FG-44265Jan 26Lumen Arts14Invalid cardDonor outreach1Recovered$60$0.10b77efe47…3d54
34036FG-44266Jul 26Lumen Arts15Invalid cardDonor outreach0Stopped—$0.0048635744…cf36
34037FG-44267Nov 25Harbor LightR02ACH R02 closedDonor outreach0Stopped—$0.00e1649227…fef5
34038FG-44268Dec 25Harbor LightR01ACH R01 fundsRetry schedule1Recovered$60$0.1092cad556…a7e2
34039FG-44269Apr 26Harbor Light96Issuer unavailableRetry schedule3Not recovered—$0.30ae426f75…0175
34040FG-44270Aug 26Harbor Light33Expired cardDonor outreach0Stopped—$0.006ef9756c…0390
34041FG-44271Sep 26Harbor Light01Do not honorRetry schedule4Recovered$50$0.40fe10f875…904a
34042FG-44272Jan 26Northgate01Do not honorRetry schedule1Recovered$90$0.10a1ac1509…23f5
34043FG-44273May 26Lumen Arts02Do not honorRetry schedule1Recovered$60$0.10c58cb8b5…64f3
34044FG-44274Aug 26Lumen Arts54Expired cardCard updater, then retry1Recovered$60$0.10322a32e1…0152
34045FG-44275May 26Harbor Light33Expired cardDonor outreach0Stopped—$0.00c0cb019c…c7e8
34046FG-44276Mar 26Lumen Arts62Account closedDonor outreach0Stopped—$0.003b39fe53…cdc1
34047FG-44277Sep 26Lumen Arts59Suspected fraudDonor outreach1Recovered$160$0.106e36332f…b903
34048FG-44278Mar 26Cedar Valley33Expired cardCard updater, then retry1Recovered$45$0.10c045c67b…92de
34049FG-44279Jun 26Cedar Valley96Issuer unavailableRetry schedule1Recovered$45$0.1091479c16…8fc1
34050FG-44280Jul 26Cedar Valley51Insufficient fundsRetry schedule4Recovered$45$0.401ed1f2ec…b4cf

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.