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 23051 to 23100 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
23051FG-33281Jun 26NorthgateR03ACH R03 no acctDonor outreach0Stopped—$0.0035ce2d15…7c57
23052FG-33282Feb 26Northgate78Account closedDonor outreach1Recovered$90$0.104b760862…41e0
23053FG-33283Feb 26Northgate54Expired cardCard updater, then retry1Recovered$250$0.105b88a244…5554
23054FG-33284Apr 26Northgate05Do not honorRetry schedule1Recovered$250$0.1073b934f3…d95b
23055FG-33285May 26Northgate78Account closedDonor outreach1Recovered$250$0.107e3965d1…d2fb
23056FG-33286Jun 26Northgate65Insufficient fundsRetry schedule3Not recovered—$0.30c1f19407…2d05
23057FG-33287May 26NorthgateR03ACH R03 no acctDonor outreach1Recovered$40$0.1041313c92…104f
23058FG-33288Jan 26Northgate33Expired cardCard updater, then retry1Recovered$40$0.1094b79427…c69f
23059FG-33289Dec 25NorthgateR01ACH R01 fundsRetry schedule2Not recovered—$0.20d27b6e56…aa93
23060FG-33290Jan 26Northgate51Insufficient fundsRetry schedule1Not recovered—$0.104025ffcf…c2cd
23061FG-33291Mar 26Northgate46Account closedDonor outreach1Recovered$45$0.1024791e48…f2e2
23062FG-33292Dec 25Northgate46Account closedDonor outreach0Stopped—$0.002c691744…7a4a
23063FG-33293Aug 26Northgate51Insufficient fundsRetry schedule3Recovered$60$0.300ccbd8c1…1095
23064FG-33294Sep 26Northgate05Do not honorRetry schedule3Not recovered—$0.30b6b93919…53b4
23065FG-33295Dec 25Riverbend05Do not honorRetry schedule3Stopped—$0.3070cff865…1dd2
23066FG-33296Mar 26Riverbend05Do not honorRetry schedule1Recovered$10$0.1096691088…15f6
23067FG-33297Oct 25Northgate54Expired cardDonor outreach1Recovered$100$0.1097ab7a73…094b
23068FG-33298Jan 26Riverbend51Insufficient fundsRetry schedule2Recovered$70$0.2029690191…d0ae
23069FG-33299Apr 26Riverbend54Expired cardDonor outreach0Stopped—$0.0081141815…0809
23070FG-33300May 26Riverbend41Lost or stolenDonor outreach0Stopped—$0.006036c537…dcfe
23071FG-33301Sep 26Riverbend51Insufficient fundsRetry schedule1Recovered$70$0.109eea4e56…5b04
23072FG-33302Feb 26Lumen Arts02Do not honorRetry schedule3Stopped—$0.3085de84d2…a4cf
23073FG-33303Jun 26Lumen Arts63Suspected fraudDonor outreach0Stopped—$0.00283e161e…1d8c
23074FG-33304Jul 26Lumen Arts33Expired cardDonor outreach0Stopped—$0.00185c7591…b109
23075FG-33305Jun 26Harbor Light51Insufficient fundsRetry schedule2Recovered$60$0.20557c016a…2451
23076FG-33306Mar 26Riverbend54Expired cardCard updater, then retry1Recovered$60$0.10021ddda3…00b7
23077FG-33307Apr 26Riverbend61Insufficient fundsRetry schedule1Recovered$10$0.10787f045c…ac58
23078FG-33308Nov 25Lumen Arts51Insufficient fundsRetry schedule1Recovered$70$0.10fdfce9e5…464c
23079FG-33309Jun 26Lumen Arts54Expired cardCard updater, then retry1Recovered$70$0.10e1050562…fbe3
23080FG-33310Mar 26Northgate33Expired cardCard updater, then retry1Recovered$30$0.10b238f25f…c5f0
23081FG-33311Dec 25Harbor Light41Lost or stolenDonor outreach1Recovered$35$0.101bf37efe…23bb
23082FG-33312Jul 26Harbor Light91Issuer unavailableRetry schedule1Recovered$35$0.10db54e0c1…8153
23083FG-33313Aug 26Harbor Light59Suspected fraudDonor outreach1Recovered$35$0.10fbbe6faa…00e9
23084FG-33314Dec 25Riverbend01Do not honorRetry schedule1Recovered$5$0.10af6a901f…f96c
23085FG-33315Mar 26Cedar Valley57Invalid cardDonor outreach0Stopped—$0.00da541b80…15cc
23086FG-33316May 26NorthgateR09ACH R01 fundsRetry schedule1Recovered$15$0.10d9097311…6085
23087FG-33317Jul 26NorthgateR09ACH R01 fundsRetry schedule3Recovered$15$0.305fd16f8a…da94
23088FG-33318Dec 25Harbor Light61Insufficient fundsRetry schedule1Recovered$30$0.108ad4f7c1…9adc
23089FG-33319Sep 26Harbor Light51Insufficient fundsRetry schedule1Not recovered—$0.105d4e44ae…b811
23090FG-33320Oct 25Harbor Light02Do not honorRetry schedule1Recovered$60$0.10b4978636…ad93
23091FG-33321Apr 26Northgate51Insufficient fundsRetry schedule3Stopped—$0.304129956c…9a83
23092FG-33322Jun 26Northgate05Do not honorRetry schedule3Not recovered—$0.304ba12ef3…8008
23093FG-33323Jul 26Northgate61Insufficient fundsRetry schedule4Recovered$100$0.40e8a59d3f…8dcf
23094FG-33324Dec 25Northgate33Expired cardCard updater, then retry1Recovered$30$0.104494f597…be9a
23095FG-33325Jan 26Northgate51Insufficient fundsRetry schedule3Not recovered—$0.30c0c56c2a…c2f2
23096FG-33326Nov 25Cedar Valley59Suspected fraudDonor outreach1Recovered$10$0.10bb107fb8…b00d
23097FG-33327Jan 26Harbor Light65Insufficient fundsRetry schedule3Recovered$80$0.30fb7f7669…52ed
23098FG-33328Sep 26Lumen ArtsR09ACH R01 fundsRetry schedule2Not recovered—$0.204a760872…e6bc
23099FG-33329Apr 26Northgate61Insufficient fundsRetry schedule1Recovered$100$0.105c003a47…c211
23100FG-33330Dec 25Harbor Light65Insufficient fundsRetry schedule3Stopped—$0.309b59b51a…d74f

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.