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 20301 to 20350 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
20301FG-30531Oct 25Cedar Valley05Do not honorRetry schedule1Recovered$60$0.106d6164a1…8190
20302FG-30532Sep 26Cedar Valley51Insufficient fundsRetry schedule1Recovered$60$0.10bacf269f…5edd
20303FG-30533Oct 25Harbor Light65Insufficient fundsRetry schedule3Not recovered—$0.3071dce12a…cf43
20304FG-30534Jan 26Harbor Light05Do not honorRetry schedule3Recovered$120$0.30ddee659a…e9f2
20305FG-30535Apr 26Harbor Light59Suspected fraudDonor outreach0Stopped—$0.00b1b2c855…a4b4
20306FG-30536May 26Harbor Light51Insufficient fundsRetry schedule3Recovered$120$0.306c4172d7…6fe6
20307FG-30537Feb 26Riverbend51Insufficient fundsRetry schedule1Recovered$15$0.10a4250f00…cd59
20308FG-30538Apr 26Riverbend51Insufficient fundsRetry schedule1Recovered$15$0.108f89acdd…b42a
20309FG-30539May 26Riverbend65Insufficient fundsRetry schedule2Not recovered—$0.207f565a01…058b
20310FG-30540Jan 26Northgate05Do not honorRetry schedule3Stopped—$0.309259eef3…4f90
20311FG-30541Apr 26Harbor LightR01ACH R01 fundsRetry schedule1Recovered$15$0.108897ca6c…b60b
20312FG-30542Nov 25Riverbend61Insufficient fundsRetry schedule1Recovered$275$0.109825f59d…ed00
20313FG-30543Dec 25Riverbend65Insufficient fundsRetry schedule2Recovered$275$0.2032593ec2…6106
20314FG-30544Jun 26Riverbend54Expired cardCard updater, then retry1Recovered$275$0.10cad7b71b…1e24
20315FG-30545Jul 26Riverbend02Do not honorRetry schedule3Stopped—$0.30b8b9f778…816d
20316FG-30546Mar 26Lumen ArtsR09ACH R01 fundsRetry schedule2Not recovered—$0.205c8103fd…48f9
20317FG-30547Jun 26Cedar Valley65Insufficient fundsRetry schedule1Recovered$30$0.10cbb3788f…7185
20318FG-30548Nov 25Harbor Light54Expired cardCard updater, then retry1Recovered$50$0.101c550805…f882
20319FG-30549Dec 25NorthgateR01ACH R01 fundsRetry schedule1Recovered$100$0.1081b26e96…fb3a
20320FG-30550Mar 26NorthgateR01ACH R01 fundsRetry schedule1Recovered$100$0.104e488f21…7673
20321FG-30551Jun 26NorthgateR01ACH R01 fundsRetry schedule1Not recovered—$0.1026030fc5…5bb2
20322FG-30552Aug 26Northgate61Insufficient fundsRetry schedule1Recovered$30$0.1000aedf2d…6049
20323FG-30553Jan 26Northgate51Insufficient fundsRetry schedule2Recovered$120$0.2021f75511…5091
20324FG-30554Aug 26NorthgateR03ACH R03 no acctDonor outreach0Stopped—$0.0012dfb503…a415
20325FG-30555Jul 26Harbor Light19Issuer unavailableRetry schedule1Recovered$110$0.10cb954341…f112
20326FG-30556Nov 25Harbor Light61Insufficient fundsRetry schedule3Stopped—$0.3045622155…aa00
20327FG-30557Dec 25Riverbend54Expired cardCard updater, then retry1Recovered$30$0.1085b9db15…13cd
20328FG-30558Jun 26Riverbend96Issuer unavailableRetry schedule1Recovered$30$0.108723984e…6627
20329FG-30559Jul 26Riverbend51Insufficient fundsRetry schedule2Not recovered—$0.209f2ec17e…e608
20330FG-30560Jan 26Lumen Arts05Do not honorRetry schedule2Recovered$110$0.2063d5cf05…376f
20331FG-30561Mar 26Riverbend54Expired cardDonor outreach0Stopped—$0.005f010214…81b1
20332FG-30562Apr 26Northgate05Do not honorRetry schedule1Recovered$10$0.10a6cb3cd3…d83a
20333FG-30563Jul 26Northgate78Account closedDonor outreach1Recovered$10$0.101006fe20…837e
20334FG-30564Dec 25Harbor Light05Do not honorRetry schedule3Not recovered—$0.304747fa5f…2f29
20335FG-30565Apr 26Lumen Arts59Suspected fraudDonor outreach0Stopped—$0.00e5411bec…5d91
20336FG-30566Mar 26Northgate54Expired cardCard updater, then retry1Recovered$50$0.1043b29e96…d62f
20337FG-30567Sep 26Harbor Light54Expired cardDonor outreach1Recovered$100$0.103c2c7400…d89c
20338FG-30568Jan 26Northgate65Insufficient fundsRetry schedule2Recovered$80$0.206dd01ca9…6c47
20339FG-30569Jul 26Northgate02Do not honorRetry schedule3Not recovered—$0.30e6327bf5…1b11
20340FG-30570Apr 26Lumen ArtsR01ACH R01 fundsRetry schedule1Recovered$70$0.104620fe17…ecfa
20341FG-30571Feb 26Riverbend96Issuer unavailableRetry schedule3Stopped—$0.30cc5a5b97…4375
20342FG-30572Apr 26Northgate61Insufficient fundsRetry schedule3Not recovered—$0.300c7a3c3a…ece4
20343FG-30573Mar 26Cedar ValleyR03ACH R03 no acctDonor outreach0Stopped—$0.00c86f38bf…29e1
20344FG-30574Sep 26Cedar ValleyR02ACH R02 closedDonor outreach1Recovered$25$0.10e8b0b265…9fde
20345FG-30575Aug 26Harbor Light33Expired cardDonor outreach0Stopped—$0.0012b518da…02f0
20346FG-30576Jan 26NorthgateR02ACH R02 closedDonor outreach1Recovered$70$0.10dcaa82a2…7959
20347FG-30577Nov 25Riverbend65Insufficient fundsRetry schedule1Stopped—$0.1065764c2f…48b7
20348FG-30578Dec 25Riverbend51Insufficient fundsRetry schedule1Stopped—$0.10b1cc53e2…73d3
20349FG-30579Jan 26Riverbend46Account closedDonor outreach1Recovered$100$0.10c110b743…b1b3
20350FG-30580Feb 26Northgate01Do not honorRetry schedule3Not recovered—$0.3093d3d7d1…0f8d

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.