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 8901 to 8950 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
8901FG-19131Dec 25Northgate51Insufficient fundsRetry schedule3Not recovered—$0.3005b775cb…aa10
8902FG-19132Mar 26Northgate78Account closedDonor outreach0Stopped—$0.0099387af0…ac5f
8903FG-19133Nov 25Harbor Light51Insufficient fundsRetry schedule2Recovered$45$0.2027fb5574…c97d
8904FG-19134Apr 26Harbor Light65Insufficient fundsRetry schedule1Recovered$45$0.1057d051f5…d88c
8905FG-19135Sep 26Harbor Light54Expired cardCard updater, then retry1Recovered$45$0.105ffe32cb…722b
8906FG-19136Oct 25Northgate96Issuer unavailableRetry schedule1Recovered$250$0.105dac3238…155d
8907FG-19137Apr 26Northgate65Insufficient fundsRetry schedule1Recovered$250$0.106208146d…e6d8
8908FG-19138Jul 26Northgate51Insufficient fundsRetry schedule3Recovered$250$0.30ec26a37f…5d66
8909FG-19139Nov 25Harbor Light91Issuer unavailableRetry schedule1Recovered$20$0.10a7e66b18…1d35
8910FG-19140Dec 25Cedar ValleyR02ACH R02 closedDonor outreach1Recovered$60$0.10d72486cb…927c
8911FG-19141Dec 25Northgate51Insufficient fundsRetry schedule2Recovered$40$0.20b6c4deb9…d143
8912FG-19142Aug 26Harbor LightR02ACH R02 closedDonor outreach0Stopped—$0.00855c7322…8a95
8913FG-19143Nov 25Lumen Arts02Do not honorRetry schedule3Not recovered—$0.3092f6670f…6e32
8914FG-19144Nov 25Cedar Valley02Do not honorRetry schedule1Recovered$30$0.10d5280d14…c328
8915FG-19145Feb 26Cedar Valley91Issuer unavailableRetry schedule1Recovered$30$0.10000d1a67…f150
8916FG-19146Aug 26Cedar Valley62Account closedDonor outreach0Stopped—$0.001c82ac11…972c
8917FG-19147Sep 26Cedar Valley61Insufficient fundsRetry schedule2Recovered$30$0.2065cf5f1d…4e94
8918FG-19148Jul 26Harbor Light33Expired cardCard updater, then retry1Recovered$250$0.10440be679…5656
8919FG-19149Jan 26Cedar ValleyR09ACH R01 fundsRetry schedule1Recovered$15$0.1079ddc16c…ae4f
8920FG-19150Aug 26Cedar ValleyR01ACH R01 fundsRetry schedule1Recovered$15$0.109e9adfbd…d2fe
8921FG-19151Jan 26Northgate65Insufficient fundsRetry schedule3Not recovered—$0.305db41008…2810
8922FG-19152Apr 26Cedar Valley63Suspected fraudDonor outreach1Not recovered—$0.105468c5b4…6254
8923FG-19153Sep 26Cedar Valley54Expired cardDonor outreach0Stopped—$0.00f6bb7e9b…4ead
8924FG-19154Nov 25Harbor Light54Expired cardDonor outreach1Recovered$50$0.1003d14f1d…26fa
8925FG-19155Dec 25Harbor Light05Do not honorRetry schedule3Stopped—$0.305f67551f…dd93
8926FG-19156Apr 26Harbor Light51Insufficient fundsRetry schedule1Recovered$40$0.10b0debe30…6082
8927FG-19157Mar 26Riverbend46Account closedDonor outreach1Recovered$30$0.105a57f10a…a2ed
8928FG-19158May 26Riverbend51Insufficient fundsRetry schedule1Recovered$30$0.102788880e…0e45
8929FG-19159May 26Riverbend05Do not honorRetry schedule1Recovered$40$0.109421bcc3…279e
8930FG-19160Sep 26Riverbend65Insufficient fundsRetry schedule1Recovered$40$0.1011e0b543…85b6
8931FG-19161Nov 25Riverbend05Do not honorRetry schedule3Not recovered—$0.300cdf1838…45a9
8932FG-19162Jan 26Riverbend63Suspected fraudDonor outreach0Not recovered—$0.00c6042bd3…f57f
8933FG-19163Mar 26Riverbend05Do not honorRetry schedule3Not recovered—$0.30418950b6…50f3
8934FG-19164Jan 26Cedar Valley61Insufficient fundsRetry schedule2Recovered$25$0.2019220018…a9fd
8935FG-19165Jul 26Cedar Valley63Suspected fraudDonor outreach0Not recovered—$0.00a6c9f73a…09bd
8936FG-19166Sep 26Cedar Valley05Do not honorRetry schedule2Recovered$25$0.2096e34d09…d268
8937FG-19167Nov 25Riverbend54Expired cardCard updater, then retry1Recovered$45$0.106055f368…efa4
8938FG-19168Feb 26Riverbend61Insufficient fundsRetry schedule2Recovered$45$0.20e9b8fdb9…66b1
8939FG-19169Dec 25NorthgateR02ACH R02 closedDonor outreach1Recovered$50$0.10e909ce1d…dc3c
8940FG-19170Oct 25NorthgateR02ACH R02 closedDonor outreach0Stopped—$0.00d3f54c2f…6460
8941FG-19171Feb 26NorthgateR01ACH R01 fundsRetry schedule1Recovered$60$0.103a83e5d3…135e
8942FG-19172Aug 26NorthgateR02ACH R02 closedDonor outreach0Stopped—$0.005c9f0da5…571e
8943FG-19173Oct 25Riverbend62Account closedDonor outreach1Recovered$40$0.10660cb618…0eba
8944FG-19174Dec 25Lumen Arts65Insufficient fundsRetry schedule3Not recovered—$0.3021ac3773…5929
8945FG-19175Mar 26Lumen Arts61Insufficient fundsRetry schedule3Not recovered—$0.306f79a3d3…4137
8946FG-19176Jun 26Riverbend33Expired cardDonor outreach0Stopped—$0.00751b8454…4724
8947FG-19177May 26Lumen Arts54Expired cardDonor outreach0Stopped—$0.00952bf609…e4a0
8948FG-19178Feb 26Riverbend33Expired cardCard updater, then retry1Recovered$60$0.10705bc030…3188
8949FG-19179Jul 26Riverbend61Insufficient fundsRetry schedule1Recovered$60$0.1057f3b400…f0ae
8950FG-19180Jun 26Riverbend05Do not honorRetry schedule1Recovered$70$0.10069292b9…f0d0

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.