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 15951 to 16000 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
15951FG-26181Jan 26Harbor Light01Do not honorRetry schedule4Recovered$40$0.40d44630b5…8f07
15952FG-26182Jul 26Harbor Light62Account closedDonor outreach0Stopped—$0.00330022c8…208a
15953FG-26183Aug 26Harbor Light51Insufficient fundsRetry schedule2Recovered$40$0.2018b705f0…87ea
15954FG-26184Nov 25NorthgateR02ACH R02 closedDonor outreach0Stopped—$0.0019dc8ff3…763b
15955FG-26185May 26NorthgateR01ACH R01 fundsRetry schedule2Not recovered—$0.2031949742…77eb
15956FG-26186Mar 26Cedar Valley91Issuer unavailableRetry schedule1Recovered$5$0.106fb3bd37…211e
15957FG-26187Dec 25Harbor Light91Issuer unavailableRetry schedule1Recovered$190$0.106dcc0ca4…49e3
15958FG-26188Mar 26Harbor Light65Insufficient fundsRetry schedule1Recovered$190$0.1064283de5…f78b
15959FG-26189Nov 25Riverbend96Issuer unavailableRetry schedule1Recovered$60$0.1087702621…fe3c
15960FG-26190Jan 26Riverbend54Expired cardDonor outreach0Stopped—$0.002ebb7b9b…94ac
15961FG-26191Apr 26Riverbend51Insufficient fundsRetry schedule1Recovered$60$0.10ddbefca8…126b
15962FG-26192Jun 26Riverbend51Insufficient fundsRetry schedule3Not recovered—$0.302303247a…a8d2
15963FG-26193Dec 25Cedar Valley33Expired cardCard updater, then retry1Recovered$15$0.1036705f2a…6639
15964FG-26194May 26Cedar Valley51Insufficient fundsRetry schedule2Recovered$15$0.20e764124c…e770
15965FG-26195Mar 26Northgate54Expired cardDonor outreach0Stopped—$0.00456c8cea…2ebc
15966FG-26196Apr 26Harbor Light91Issuer unavailableRetry schedule3Not recovered—$0.3027a2e358…a429
15967FG-26197Feb 26Riverbend61Insufficient fundsRetry schedule1Recovered$20$0.105f4452cd…01b3
15968FG-26198Oct 25Riverbend91Issuer unavailableRetry schedule1Recovered$20$0.10bd3726b5…f4dc
15969FG-26199May 26Riverbend51Insufficient fundsRetry schedule1Recovered$15$0.1013e48c5c…fad4
15970FG-26200Nov 25Lumen ArtsR03ACH R03 no acctDonor outreach0Stopped—$0.0067d9dcdd…fdcb
15971FG-26201Apr 26Lumen ArtsR01ACH R01 fundsRetry schedule1Recovered$45$0.10e45a6a28…8e62
15972FG-26202Apr 26Cedar Valley15Invalid cardDonor outreach0Stopped—$0.00f42e5941…8cbb
15973FG-26203Aug 26Riverbend65Insufficient fundsRetry schedule2Not recovered—$0.20b11f308b…0b6c
15974FG-26204Apr 26Lumen ArtsR02ACH R02 closedDonor outreach1Recovered$50$0.10524f7fc9…9609
15975FG-26205Nov 25Riverbend51Insufficient fundsRetry schedule1Recovered$35$0.1018e173fa…e7e5
15976FG-26206Aug 26Riverbend01Do not honorRetry schedule1Recovered$20$0.105648ce9e…920a
15977FG-26207Oct 25Lumen ArtsR04ACH R03 no acctDonor outreach0Stopped—$0.00709e764b…c2f5
15978FG-26208Aug 26Riverbend05Do not honorRetry schedule1Recovered$10$0.10600ce2fd…0849
15979FG-26209Mar 26Cedar ValleyR01ACH R01 fundsRetry schedule1Recovered$60$0.10305b095d…e391
15980FG-26210Sep 26Lumen Arts65Insufficient fundsRetry schedule1Recovered$35$0.108e0ad33a…dc04
15981FG-26211Oct 25Northgate54Expired cardDonor outreach0Stopped—$0.00110813b3…3175
15982FG-26212Feb 26Northgate51Insufficient fundsRetry schedule1Recovered$40$0.10ee665a28…75dc
15983FG-26213Mar 26Northgate62Account closedDonor outreach0Stopped—$0.0002bb8da3…00a9
15984FG-26214Sep 26Northgate05Do not honorRetry schedule3Recovered$40$0.309e72b24c…be78
15985FG-26215Jan 26Lumen Arts54Expired cardCard updater, then retry1Recovered$25$0.1024744ad0…8d13
15986FG-26216Feb 26Harbor Light01Do not honorRetry schedule3Not recovered—$0.30848eaf68…59ca
15987FG-26217Apr 26Lumen Arts65Insufficient fundsRetry schedule1Recovered$25$0.10e8a12860…f64b
15988FG-26218Aug 26Lumen Arts01Do not honorRetry schedule1Recovered$25$0.108a71d4e9…20c6
15989FG-26219Sep 26Lumen Arts05Do not honorRetry schedule3Not recovered—$0.30edde8aae…bec8
15990FG-26220Oct 25Northgate59Suspected fraudDonor outreach0Stopped—$0.005ce0f91f…fed1
15991FG-26221Dec 25Northgate61Insufficient fundsRetry schedule2Recovered$25$0.20ca18a6ff…519b
15992FG-26222Mar 26Northgate57Invalid cardDonor outreach0Stopped—$0.008fa759c9…3ffe
15993FG-26223Jun 26Northgate05Do not honorRetry schedule3Stopped—$0.30f3e33775…44aa
15994FG-26224Oct 25Northgate54Expired cardCard updater, then retry1Recovered$15$0.10d4dec002…52d1
15995FG-26225Oct 25Northgate01Do not honorRetry schedule1Recovered$150$0.10ac807c41…a0cc
15996FG-26226Nov 25Northgate65Insufficient fundsRetry schedule3Not recovered—$0.30d8d98006…4c66
15997FG-26227Feb 26Northgate02Do not honorRetry schedule3Not recovered—$0.300b443c3a…ec89
15998FG-26228Jul 26Harbor Light57Invalid cardDonor outreach1Recovered$25$0.10cbf3e3f5…c1d8
15999FG-26229Dec 25Cedar Valley51Insufficient fundsRetry schedule3Not recovered—$0.3024c586a3…a9d5
16000FG-26230Aug 26Northgate61Insufficient fundsRetry schedule1Recovered$50$0.10678ef745…cbef

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.