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 19451 to 19500 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
19451FG-29681Feb 26Lumen ArtsR02ACH R02 closedDonor outreach0Stopped—$0.00a708ca62…4067
19452FG-29682Jan 26Riverbend54Expired cardDonor outreach0Stopped—$0.00562195c8…1b65
19453FG-29683Sep 26Riverbend54Expired cardCard updater, then retry1Recovered$50$0.100c481ef3…5c1e
19454FG-29684Apr 26Cedar Valley33Expired cardCard updater, then retry1Not recovered—$0.1086486775…6940
19455FG-29685Jul 26Cedar Valley15Invalid cardDonor outreach0Stopped—$0.000beb5882…cd8d
19456FG-29686Oct 25Riverbend51Insufficient fundsRetry schedule3Not recovered—$0.309e92ce71…f74e
19457FG-29687Dec 25NorthgateR09ACH R01 fundsRetry schedule1Recovered$15$0.10eddac2dc…f3f2
19458FG-29688Aug 26NorthgateR02ACH R02 closedDonor outreach0Stopped—$0.006b0fae82…968c
19459FG-29689Oct 25Lumen Arts51Insufficient fundsRetry schedule3Stopped—$0.3002c8f10d…3d57
19460FG-29690Mar 26Lumen Arts65Insufficient fundsRetry schedule2Recovered$130$0.2039404576…540f
19461FG-29691Nov 25Harbor Light41Lost or stolenCard updater, then retry1Recovered$80$0.10083355d7…65e1
19462FG-29692Dec 25Harbor Light54Expired cardDonor outreach0Stopped—$0.0081de61ed…8046
19463FG-29693Jul 26Harbor Light54Expired cardCard updater, then retry1Recovered$80$0.10e5313026…168d
19464FG-29694Apr 26Harbor Light33Expired cardDonor outreach0Stopped—$0.000dc36be6…c5b3
19465FG-29695Feb 26Cedar Valley54Expired cardCard updater, then retry1Recovered$45$0.10e14ca340…d746
19466FG-29696Aug 26Cedar Valley63Suspected fraudDonor outreach0Not recovered—$0.00d6a218c5…7b03
19467FG-29697Apr 26Riverbend65Insufficient fundsRetry schedule2Recovered$10$0.205aeefac3…73d1
19468FG-29698Jun 26Riverbend62Account closedDonor outreach0Stopped—$0.0015e70623…196c
19469FG-29699May 26Harbor Light54Expired cardDonor outreach0Stopped—$0.00e6619eb2…6cf1
19470FG-29700Jun 26Harbor Light96Issuer unavailableRetry schedule1Recovered$50$0.1055c41bb1…b0e6
19471FG-29701Jul 26NorthgateR02ACH R02 closedDonor outreach0Stopped—$0.0083e6a295…8df4
19472FG-29702Feb 26NorthgateR04ACH R03 no acctDonor outreach0Stopped—$0.003df16767…29f0
19473FG-29703Jul 26NorthgateR02ACH R02 closedDonor outreach0Stopped—$0.0059b8685a…a27d
19474FG-29704Oct 25Harbor Light19Issuer unavailableRetry schedule1Recovered$80$0.10ea5897ae…2c2a
19475FG-29705May 26Harbor Light54Expired cardCard updater, then retry1Recovered$80$0.100ad2b07e…ca66
19476FG-29706Mar 26Harbor LightR01ACH R01 fundsRetry schedule2Not recovered—$0.2030047dc6…4239
19477FG-29707May 26Harbor LightR09ACH R01 fundsRetry schedule2Stopped—$0.204aaef262…9ca7
19478FG-29708Apr 26RiverbendR02ACH R02 closedDonor outreach0Stopped—$0.00cb8a0f98…ade2
19479FG-29709Oct 25Harbor Light33Expired cardDonor outreach0Stopped—$0.0083e33a63…862e
19480FG-29710Mar 26Harbor Light54Expired cardDonor outreach0Stopped—$0.00165ad8fc…c639
19481FG-29711Nov 25Harbor Light65Insufficient fundsRetry schedule4Not recovered—$0.40ee13d270…5fce
19482FG-29712Sep 26Riverbend65Insufficient fundsRetry schedule2Stopped—$0.20642bce52…f4f1
19483FG-29713Dec 25Harbor Light02Do not honorRetry schedule3Not recovered—$0.30cc136354…404e
19484FG-29714Dec 25Cedar ValleyR09ACH R01 fundsRetry schedule1Recovered$40$0.1009f06916…7f22
19485FG-29715Mar 26Cedar ValleyR01ACH R01 fundsRetry schedule2Not recovered—$0.2050eec78a…4b48
19486FG-29716Jan 26Riverbend05Do not honorRetry schedule4Recovered$60$0.407eebfeb0…1866
19487FG-29717Nov 25Lumen Arts14Invalid cardDonor outreach0Stopped—$0.0085888c1c…5d1a
19488FG-29718Feb 26Lumen Arts05Do not honorRetry schedule1Recovered$60$0.10f155b201…f3ac
19489FG-29719Jun 26Riverbend05Do not honorRetry schedule3Stopped—$0.30b785033b…7413
19490FG-29720Oct 25Northgate54Expired cardDonor outreach1Recovered$110$0.10d821651b…b473
19491FG-29721Nov 25Northgate65Insufficient fundsRetry schedule1Not recovered—$0.105fc8b59a…cc74
19492FG-29722Nov 25Harbor Light61Insufficient fundsRetry schedule1Recovered$20$0.10b6dfc543…8326
19493FG-29723May 26Harbor Light54Expired cardCard updater, then retry1Recovered$20$0.105f751310…3ec9
19494FG-29724Jan 26NorthgateR02ACH R02 closedDonor outreach0Stopped—$0.00a0af0433…0477
19495FG-29725Oct 25Cedar Valley51Insufficient fundsRetry schedule1Recovered$30$0.1031792ddd…8e81
19496FG-29726Mar 26Cedar Valley91Issuer unavailableRetry schedule2Recovered$30$0.20b6440d74…d5f1
19497FG-29727Oct 25Lumen Arts51Insufficient fundsRetry schedule3Recovered$35$0.30e559436c…1600
19498FG-29728Jan 26Cedar Valley61Insufficient fundsRetry schedule2Recovered$60$0.2044c3485d…dc33
19499FG-29729Jul 26Cedar Valley96Issuer unavailableRetry schedule3Not recovered—$0.3025782c18…c17f
19500FG-29730Jul 26Lumen Arts54Expired cardDonor outreach0Stopped—$0.00653b9c17…91e6

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.