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 30101 to 30150 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
30101FG-40331Mar 26Lumen Arts54Expired cardCard updater, then retry1Recovered$110$0.10a573abc6…693d
30102FG-40332Jul 26Lumen Arts01Do not honorRetry schedule3Stopped—$0.308e9a68f0…5c41
30103FG-40333Oct 25Riverbend05Do not honorRetry schedule2Recovered$110$0.209aa7e247…f8a7
30104FG-40334Aug 26Riverbend51Insufficient fundsRetry schedule1Recovered$110$0.106932750b…7e31
30105FG-40335Sep 26Riverbend51Insufficient fundsRetry schedule3Recovered$110$0.30957c4dc9…540a
30106FG-40336Jun 26Lumen Arts51Insufficient fundsRetry schedule3Not recovered—$0.30e11fab48…3252
30107FG-40337Mar 26Northgate01Do not honorRetry schedule4Recovered$80$0.403c8392c9…bc23
30108FG-40338Jul 26Riverbend61Insufficient fundsRetry schedule1Recovered$15$0.10d05f7800…291e
30109FG-40339Dec 25Harbor Light63Suspected fraudDonor outreach0Not recovered—$0.00e84a74fe…2a03
30110FG-40340Nov 25Harbor Light19Issuer unavailableRetry schedule3Not recovered—$0.30a3f6c127…02ad
30111FG-40341Mar 26Cedar Valley51Insufficient fundsRetry schedule3Not recovered—$0.3062e4fae2…fd0b
30112FG-40342Jan 26Harbor Light59Suspected fraudDonor outreach0Stopped—$0.006ba02a73…7ab4
30113FG-40343Jul 26Harbor Light01Do not honorRetry schedule1Recovered$20$0.10415d6079…4118
30114FG-40344Nov 25NorthgateR04ACH R03 no acctDonor outreach0Stopped—$0.0036b5e48d…82b7
30115FG-40345Nov 25Harbor Light51Insufficient fundsRetry schedule3Recovered$45$0.304ae3e23f…c86d
30116FG-40346Apr 26Harbor Light54Expired cardDonor outreach0Stopped—$0.0073f1e97b…5799
30117FG-40347Aug 26Harbor Light61Insufficient fundsRetry schedule1Recovered$45$0.1088024b6f…11fa
30118FG-40348Sep 26Riverbend65Insufficient fundsRetry schedule1Recovered$10$0.1002701c93…dace
30119FG-40349Mar 26Northgate46Account closedDonor outreach1Recovered$90$0.103b7dd7b1…54f8
30120FG-40350Aug 26Northgate91Issuer unavailableRetry schedule1Recovered$90$0.10b4e9bb5a…f959
30121FG-40351Dec 25Northgate51Insufficient fundsRetry schedule1Recovered$40$0.109facefe6…7327
30122FG-40352Jun 26Riverbend59Suspected fraudDonor outreach1Recovered$40$0.10e028efb5…114d
30123FG-40353Jul 26Riverbend54Expired cardDonor outreach0Stopped—$0.00b4b4f2a4…501f
30124FG-40354Jun 26Cedar Valley51Insufficient fundsRetry schedule3Not recovered—$0.303ee46323…d238
30125FG-40355Feb 26Riverbend91Issuer unavailableRetry schedule2Recovered$40$0.20d8230fc5…47cc
30126FG-40356Sep 26Riverbend61Insufficient fundsRetry schedule3Stopped—$0.30d2a8d350…4ab0
30127FG-40357Nov 25Harbor Light05Do not honorRetry schedule2Recovered$15$0.20204a9ec8…7ae8
30128FG-40358May 26Harbor Light05Do not honorRetry schedule1Recovered$15$0.10fd9bce63…7eb0
30129FG-40359Feb 26Riverbend51Insufficient fundsRetry schedule3Stopped—$0.303c9f6e25…c077
30130FG-40360Nov 25Riverbend05Do not honorRetry schedule1Recovered$15$0.107f3b84f3…eb79
30131FG-40361Jan 26Riverbend02Do not honorRetry schedule3Not recovered—$0.30d0d95ab9…f92d
30132FG-40362Jun 26Riverbend54Expired cardCard updater, then retry1Recovered$15$0.10c3d04360…9475
30133FG-40363Jul 26Harbor Light05Do not honorRetry schedule3Not recovered—$0.3038e69818…1675
30134FG-40364Jan 26Northgate51Insufficient fundsRetry schedule2Not recovered—$0.205d767846…9eb6
30135FG-40365Jun 26Northgate65Insufficient fundsRetry schedule1Recovered$60$0.102c2cf335…b4d1
30136FG-40366Aug 26Cedar Valley51Insufficient fundsRetry schedule3Not recovered—$0.30b18cdc09…c7e1
30137FG-40367Apr 26Cedar Valley54Expired cardCard updater, then retry1Recovered$10$0.1088a5a5fd…8840
30138FG-40368May 26Lumen Arts33Expired cardDonor outreach0Stopped—$0.009e53515f…2a56
30139FG-40369Mar 26Northgate33Expired cardCard updater, then retry1Recovered$50$0.100c0dcc29…ea67
30140FG-40370Sep 26Northgate51Insufficient fundsRetry schedule1Recovered$50$0.10ea26280a…de2c
30141FG-40371Feb 26Northgate91Issuer unavailableRetry schedule2Recovered$35$0.206063acb2…813d
30142FG-40372Mar 26Cedar ValleyR01ACH R01 fundsRetry schedule1Recovered$30$0.1009e8fc48…4bcc
30143FG-40373Mar 26Harbor Light65Insufficient fundsRetry schedule4Recovered$45$0.40ee7730a2…c7ee
30144FG-40374Dec 25Northgate43Lost or stolenDonor outreach0Stopped—$0.00ec3945a3…8c36
30145FG-40375Mar 26Riverbend41Lost or stolenDonor outreach0Stopped—$0.00c292cc77…9bd3
30146FG-40376May 26Riverbend01Do not honorRetry schedule3Not recovered—$0.302f947c72…4b31
30147FG-40377Sep 26Riverbend14Invalid cardDonor outreach0Stopped—$0.000af1a095…ace6
30148FG-40378Oct 25Northgate51Insufficient fundsRetry schedule3Not recovered—$0.309d4f5701…8cb9
30149FG-40379Nov 25Northgate78Account closedDonor outreach1Not recovered—$0.10c2159870…136f
30150FG-40380Feb 26Northgate02Do not honorRetry schedule3Stopped—$0.30187ad8e9…dd4d

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.