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 17301 to 17350 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
17301FG-27531Nov 25Harbor Light51Insufficient fundsRetry schedule1Stopped—$0.104217f350…3979
17302FG-27532Jan 26Harbor Light33Expired cardCard updater, then retry1Not recovered—$0.1047738a05…3a35
17303FG-27533Jul 26Harbor Light78Account closedDonor outreach0Stopped—$0.00b3b62f58…3661
17304FG-27534Jan 26Northgate33Expired cardCard updater, then retry1Recovered$80$0.10fe8bcbbb…1506
17305FG-27535Aug 26Northgate33Expired cardCard updater, then retry1Recovered$80$0.1098e58dc0…acf7
17306FG-27536Sep 26Northgate57Invalid cardDonor outreach1Recovered$80$0.1084562dc4…bccd
17307FG-27537Dec 25Harbor Light51Insufficient fundsRetry schedule1Recovered$20$0.1092464aea…e1c9
17308FG-27538Jul 26Harbor Light01Do not honorRetry schedule2Recovered$20$0.2003195e81…fd67
17309FG-27539Jul 26Harbor Light02Do not honorRetry schedule2Recovered$80$0.20504dd5ca…6c27
17310FG-27540Jun 26Riverbend05Do not honorRetry schedule3Not recovered—$0.30e79f3293…3b2c
17311FG-27541Jun 26NorthgateR01ACH R01 fundsRetry schedule1Recovered$45$0.10fb76e977…e906
17312FG-27542Aug 26NorthgateR03ACH R03 no acctDonor outreach0Stopped—$0.00bf5c650e…5510
17313FG-27543Feb 26Northgate51Insufficient fundsRetry schedule1Recovered$30$0.109a0ef113…b23e
17314FG-27544Mar 26Riverbend51Insufficient fundsRetry schedule1Not recovered—$0.10a0ae9a5e…66d9
17315FG-27545Jun 26Riverbend65Insufficient fundsRetry schedule1Recovered$60$0.108af8874a…932a
17316FG-27546Sep 26Riverbend51Insufficient fundsRetry schedule1Recovered$60$0.102e288a3b…d41b
17317FG-27547Mar 26Harbor Light54Expired cardDonor outreach1Recovered$60$0.1052130d8b…1f17
17318FG-27548Sep 26Harbor Light51Insufficient fundsRetry schedule1Recovered$60$0.10f89cd7f1…2e83
17319FG-27549Oct 25Riverbend62Account closedDonor outreach0Stopped—$0.0069df5ffd…151c
17320FG-27550Nov 25Riverbend65Insufficient fundsRetry schedule1Recovered$100$0.105a93685b…d326
17321FG-27551Apr 26Harbor Light51Insufficient fundsRetry schedule2Not recovered—$0.2002ca04b6…1353
17322FG-27552Jun 26Riverbend96Issuer unavailableRetry schedule1Recovered$50$0.105634fb6e…3ae0
17323FG-27553Mar 26RiverbendR09ACH R01 fundsRetry schedule2Recovered$10$0.208d76bc4b…c348
17324FG-27554Mar 26Harbor Light65Insufficient fundsRetry schedule1Recovered$45$0.10036329e7…8e46
17325FG-27555Oct 25Riverbend01Do not honorRetry schedule1Recovered$160$0.102da0d334…edc8
17326FG-27556Aug 26Riverbend91Issuer unavailableRetry schedule1Recovered$160$0.1099b313b0…4369
17327FG-27557Aug 26NorthgateR02ACH R02 closedDonor outreach0Stopped—$0.00ebf5c268…8ffa
17328FG-27558Jun 26Harbor Light54Expired cardDonor outreach0Stopped—$0.007355710e…3f69
17329FG-27559Apr 26Riverbend63Suspected fraudDonor outreach0Not recovered—$0.0077299052…4521
17330FG-27560May 26Riverbend05Do not honorRetry schedule2Recovered$15$0.2083f58f73…67e4
17331FG-27561Mar 26Harbor LightR09ACH R01 fundsRetry schedule2Recovered$120$0.200db618fa…c618
17332FG-27562Oct 25Harbor Light14Invalid cardDonor outreach0Stopped—$0.009bc6e932…c877
17333FG-27563Dec 25Harbor Light51Insufficient fundsRetry schedule1Recovered$30$0.101e6a15df…ce34
17334FG-27564May 26Harbor Light02Do not honorRetry schedule3Recovered$30$0.3050c7038b…f214
17335FG-27565May 26Lumen Arts65Insufficient fundsRetry schedule2Not recovered—$0.200709ef22…b825
17336FG-27566Jul 26Lumen Arts61Insufficient fundsRetry schedule2Recovered$70$0.2065241309…c623
17337FG-27567Aug 26Lumen Arts33Expired cardCard updater, then retry1Recovered$70$0.10317ed3d4…a3e4
17338FG-27568Sep 26Lumen Arts51Insufficient fundsRetry schedule1Recovered$70$0.10db02787b…4d3a
17339FG-27569Apr 26Harbor Light65Insufficient fundsRetry schedule1Recovered$30$0.1074bd5a0f…94ec
17340FG-27570Nov 25Harbor LightR02ACH R02 closedDonor outreach0Stopped—$0.001088809c…4d37
17341FG-27571Apr 26Harbor Light54Expired cardCard updater, then retry1Recovered$35$0.104d874c68…270c
17342FG-27572Jul 26Harbor Light51Insufficient fundsRetry schedule1Recovered$35$0.107990aa63…1df3
17343FG-27573Dec 25Riverbend41Lost or stolenCard updater, then retry1Recovered$225$0.10d3f44ea9…8a30
17344FG-27574Jun 26Harbor Light65Insufficient fundsRetry schedule2Stopped—$0.20aa5314f7…9955
17345FG-27575Dec 25Riverbend59Suspected fraudDonor outreach0Not recovered—$0.00ba06288e…1947
17346FG-27576Sep 26Riverbend43Lost or stolenCard updater, then retry1Recovered$40$0.10638c8307…1cf0
17347FG-27577Oct 25Harbor Light65Insufficient fundsRetry schedule1Recovered$20$0.10a2593ec3…a661
17348FG-27578Mar 26Harbor Light15Invalid cardDonor outreach1Recovered$20$0.10bf003000…7f10
17349FG-27579Jul 26Harbor Light51Insufficient fundsRetry schedule1Recovered$20$0.10cb60afa9…65f9
17350FG-27580Oct 25Harbor Light05Do not honorRetry schedule2Recovered$30$0.2035d91c5c…44e3

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.