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 2851 to 2900 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
2851FG-13081May 26Lumen Arts41Lost or stolenDonor outreach1Recovered$15$0.10909dab85…3a0e
2852FG-13082Mar 26Lumen Arts01Do not honorRetry schedule1Recovered$10$0.10cc04fb53…5888
2853FG-13083Mar 26Cedar Valley54Expired cardCard updater, then retry1Not recovered—$0.10ef543834…c3fc
2854FG-13084Jun 26Northgate62Account closedDonor outreach1Recovered$40$0.1000ac60a6…dc30
2855FG-13085Jul 26Northgate61Insufficient fundsRetry schedule2Recovered$40$0.205c646f78…c526
2856FG-13086Sep 26Northgate54Expired cardCard updater, then retry1Recovered$40$0.100da90b5a…3e1e
2857FG-13087Oct 25Cedar Valley51Insufficient fundsRetry schedule1Recovered$15$0.107faa7782…1826
2858FG-13088Feb 26Cedar Valley05Do not honorRetry schedule2Recovered$15$0.20a8abaf79…03d3
2859FG-13089Sep 26Cedar Valley33Expired cardDonor outreach0Stopped—$0.00611c9aad…1768
2860FG-13090Jan 26Harbor Light65Insufficient fundsRetry schedule2Recovered$60$0.20e25d79ef…c494
2861FG-13091May 26Northgate91Issuer unavailableRetry schedule1Recovered$20$0.10d2ff3247…4e3c
2862FG-13092Apr 26Harbor Light65Insufficient fundsRetry schedule2Not recovered—$0.206623700e…22d9
2863FG-13093Apr 26Harbor Light01Do not honorRetry schedule1Recovered$45$0.10c22e1cfc…f1a8
2864FG-13094Oct 25Cedar Valley33Expired cardCard updater, then retry1Recovered$15$0.10927c400a…4cd1
2865FG-13095Dec 25Cedar Valley01Do not honorRetry schedule3Not recovered—$0.30f83af26d…7765
2866FG-13096Apr 26Cedar Valley54Expired cardDonor outreach0Stopped—$0.0012b2a7a7…c058
2867FG-13097Jul 26Cedar Valley61Insufficient fundsRetry schedule1Recovered$15$0.108fe6ef9f…55ca
2868FG-13098Dec 25Riverbend61Insufficient fundsRetry schedule3Recovered$15$0.30a8a17500…9a87
2869FG-13099Jan 26Harbor Light91Issuer unavailableRetry schedule3Recovered$250$0.30f70a3f26…ded6
2870FG-13100Feb 26Northgate51Insufficient fundsRetry schedule2Recovered$25$0.208d8f7f82…918d
2871FG-13101Aug 26Northgate54Expired cardCard updater, then retry1Recovered$25$0.101d6fbe82…110c
2872FG-13102Dec 25Lumen Arts05Do not honorRetry schedule1Recovered$20$0.10a1258fca…d4fb
2873FG-13103Sep 26Lumen Arts51Insufficient fundsRetry schedule3Not recovered—$0.3069ebfc9e…e351
2874FG-13104May 26Cedar Valley91Issuer unavailableRetry schedule1Recovered$20$0.1008d199d1…66ad
2875FG-13105Feb 26Harbor Light33Expired cardCard updater, then retry1Recovered$35$0.101ac81073…b3c8
2876FG-13106Apr 26Harbor Light15Invalid cardDonor outreach0Stopped—$0.002657e78c…d396
2877FG-13107Jul 26RiverbendR02ACH R02 closedDonor outreach0Stopped—$0.00763b17ed…eea1
2878FG-13108Jan 26Harbor Light65Insufficient fundsRetry schedule1Recovered$80$0.10ccab4f81…73f0
2879FG-13109Jun 26Harbor Light33Expired cardCard updater, then retry1Not recovered—$0.100c2362ca…3134
2880FG-13110Oct 25Harbor Light54Expired cardCard updater, then retry1Recovered$30$0.1068d52c9b…d783
2881FG-13111Jan 26Harbor Light63Suspected fraudDonor outreach1Not recovered—$0.1060413449…22a5
2882FG-13112Sep 26Harbor Light51Insufficient fundsRetry schedule1Recovered$30$0.109d556a72…2e08
2883FG-13113Nov 25Harbor Light14Invalid cardDonor outreach0Stopped—$0.00a45a2f41…21ca
2884FG-13114Dec 25Harbor Light54Expired cardCard updater, then retry1Recovered$20$0.104b6d48b6…0374
2885FG-13115Jan 26Harbor Light05Do not honorRetry schedule3Stopped—$0.3008c6c033…4a49
2886FG-13116Feb 26Harbor Light01Do not honorRetry schedule1Recovered$20$0.1025e4245a…0123
2887FG-13117Jan 26NorthgateR02ACH R02 closedDonor outreach0Stopped—$0.00db0abd6a…c5d8
2888FG-13118Jul 26NorthgateR09ACH R01 fundsRetry schedule2Not recovered—$0.208391701d…4082
2889FG-13119Nov 25Cedar Valley41Lost or stolenDonor outreach0Stopped—$0.00a060c405…4cc9
2890FG-13120Jul 26Riverbend59Suspected fraudDonor outreach0Not recovered—$0.00d910a550…9931
2891FG-13121Aug 26Riverbend33Expired cardDonor outreach0Stopped—$0.006ed8e643…c9c3
2892FG-13122Jan 26Cedar Valley05Do not honorRetry schedule3Not recovered—$0.30dac5d0da…15c1
2893FG-13123May 26Riverbend61Insufficient fundsRetry schedule3Recovered$30$0.30f898cbbe…6262
2894FG-13124Apr 26Northgate54Expired cardCard updater, then retry1Recovered$35$0.10075ed2dc…69ad
2895FG-13125May 26Riverbend54Expired cardCard updater, then retry1Recovered$20$0.1030e41ef2…1193
2896FG-13126Feb 26Harbor LightR01ACH R01 fundsRetry schedule2Recovered$30$0.20cdcb1002…e836
2897FG-13127Aug 26Northgate33Expired cardCard updater, then retry2Recovered$70$0.206b1e3a6e…1d48
2898FG-13128Feb 26Lumen ArtsR01ACH R01 fundsRetry schedule1Recovered$50$0.10906da78b…6af4
2899FG-13129Jun 26Lumen ArtsR02ACH R02 closedDonor outreach0Stopped—$0.0075d2fca1…ee43
2900FG-13130Mar 26Riverbend05Do not honorRetry schedule3Stopped—$0.30cca45c8e…aabf

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.