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 8251 to 8300 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
8251FG-18481Sep 26NorthgateR09ACH R01 fundsRetry schedule2Recovered$40$0.20b75161c2…b842
8252FG-18482Mar 26Cedar ValleyR01ACH R01 fundsRetry schedule1Recovered$25$0.10a568f1b3…539f
8253FG-18483Jun 26Cedar Valley41Lost or stolenCard updater, then retry1Recovered$10$0.1075089f17…ebe7
8254FG-18484Jan 26Cedar Valley54Expired cardCard updater, then retry1Recovered$30$0.106433547c…806e
8255FG-18485Jan 26Harbor Light51Insufficient fundsRetry schedule1Recovered$30$0.10ca0fa721…c020
8256FG-18486Jan 26Riverbend51Insufficient fundsRetry schedule1Recovered$100$0.10b5dc034f…4b88
8257FG-18487Aug 26Riverbend33Expired cardDonor outreach0Stopped—$0.00c7c99c2f…a3f4
8258FG-18488Dec 25Cedar Valley51Insufficient fundsRetry schedule2Not recovered—$0.208e92024b…a8a9
8259FG-18489Jul 26Cedar Valley54Expired cardDonor outreach0Stopped—$0.006948a9c7…952f
8260FG-18490Mar 26Riverbend19Issuer unavailableRetry schedule1Recovered$35$0.1082737323…896b
8261FG-18491Dec 25Northgate05Do not honorRetry schedule3Not recovered—$0.30da69bb30…defa
8262FG-18492Nov 25Harbor Light61Insufficient fundsRetry schedule2Recovered$30$0.20454a7a9c…74a4
8263FG-18493Dec 25Harbor Light51Insufficient fundsRetry schedule3Recovered$30$0.30205e0e99…671e
8264FG-18494Sep 26Harbor Light54Expired cardCard updater, then retry1Not recovered—$0.10befad30a…090c
8265FG-18495Jul 26Harbor Light51Insufficient fundsRetry schedule2Recovered$40$0.20fa043d6a…009b
8266FG-18496Feb 26Northgate15Invalid cardDonor outreach1Recovered$20$0.10c1ed4b62…3aa2
8267FG-18497May 26Northgate51Insufficient fundsRetry schedule1Recovered$20$0.1069d6651a…edbd
8268FG-18498Dec 25Northgate61Insufficient fundsRetry schedule1Recovered$15$0.10a887fdcd…43ac
8269FG-18499May 26Cedar Valley54Expired cardCard updater, then retry1Recovered$15$0.10b6327583…16cd
8270FG-18500Jul 26Cedar Valley51Insufficient fundsRetry schedule1Not recovered—$0.10fdee19e0…a4d2
8271FG-18501Nov 25Harbor Light51Insufficient fundsRetry schedule1Recovered$10$0.105fb92ad6…47e8
8272FG-18502Aug 26Harbor Light05Do not honorRetry schedule1Recovered$10$0.10cb2ea1f9…8365
8273FG-18503Sep 26Cedar Valley65Insufficient fundsRetry schedule1Recovered$10$0.10e2193b90…e578
8274FG-18504May 26Harbor Light51Insufficient fundsRetry schedule1Recovered$90$0.1018fc258a…7627
8275FG-18505Jan 26Northgate65Insufficient fundsRetry schedule1Recovered$45$0.1033cade22…9bc4
8276FG-18506Mar 26Northgate02Do not honorRetry schedule3Stopped—$0.30795b9d79…37c2
8277FG-18507May 26Lumen Arts78Account closedDonor outreach0Stopped—$0.0000b6097a…22db
8278FG-18508Sep 26Harbor Light57Invalid cardDonor outreach0Stopped—$0.000230de30…549d
8279FG-18509Sep 26Lumen ArtsR09ACH R01 fundsRetry schedule2Recovered$35$0.20f3e53496…8e65
8280FG-18510Jan 26Cedar Valley51Insufficient fundsRetry schedule3Recovered$80$0.30342d7193…45f9
8281FG-18511Sep 26NorthgateR01ACH R01 fundsRetry schedule1Recovered$80$0.1048d035be…42fd
8282FG-18512Nov 25Harbor Light62Account closedDonor outreach1Recovered$45$0.10fdee773d…aed5
8283FG-18513Oct 25Cedar Valley54Expired cardCard updater, then retry1Recovered$30$0.10297e253f…ceed
8284FG-18514Apr 26Cedar Valley62Account closedDonor outreach0Stopped—$0.00cb369062…7bca
8285FG-18515Oct 25Lumen ArtsR02ACH R02 closedDonor outreach0Stopped—$0.00a275f8c4…604e
8286FG-18516Apr 26Lumen ArtsR01ACH R01 fundsRetry schedule2Not recovered—$0.20fe392cf3…b964
8287FG-18517Aug 26Lumen ArtsR03ACH R03 no acctDonor outreach0Stopped—$0.006e603ad2…4e94
8288FG-18518Oct 25RiverbendR03ACH R03 no acctDonor outreach0Stopped—$0.0011874ad5…6a64
8289FG-18519Nov 25Cedar Valley78Account closedDonor outreach0Stopped—$0.00df843d39…c727
8290FG-18520Nov 25Lumen Arts61Insufficient fundsRetry schedule2Not recovered—$0.20a41eda07…b5cf
8291FG-18521Apr 26Lumen Arts51Insufficient fundsRetry schedule1Recovered$15$0.10933e35ea…e632
8292FG-18522Sep 26Lumen Arts65Insufficient fundsRetry schedule1Recovered$15$0.10d30b04c4…bc12
8293FG-18523Oct 25Harbor Light01Do not honorRetry schedule2Recovered$10$0.2043af0c52…6be9
8294FG-18524Sep 26Riverbend61Insufficient fundsRetry schedule1Recovered$25$0.10da93bed8…2b72
8295FG-18525Aug 26Lumen Arts65Insufficient fundsRetry schedule2Recovered$35$0.206db86a6e…397e
8296FG-18526Jun 26Harbor Light33Expired cardCard updater, then retry1Recovered$30$0.1034f3e120…42ac
8297FG-18527Sep 26Harbor Light61Insufficient fundsRetry schedule2Recovered$30$0.20d6aa8ad8…ea9d
8298FG-18528May 26Northgate61Insufficient fundsRetry schedule2Stopped—$0.206b94f91a…8024
8299FG-18529Sep 26Northgate05Do not honorRetry schedule4Recovered$50$0.40373b0e0e…5047
8300FG-18530Nov 25Harbor Light54Expired cardCard updater, then retry1Recovered$80$0.105fb139f0…a986

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.