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 18001 to 18050 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
18001FG-28231Apr 26Lumen Arts51Insufficient fundsRetry schedule2Recovered$45$0.205a125311…9313
18002FG-28232Nov 25Northgate05Do not honorRetry schedule2Recovered$30$0.207c908f5f…5623
18003FG-28233Feb 26Northgate62Account closedDonor outreach1Recovered$400$0.101284fbab…614d
18004FG-28234Jun 26Cedar Valley51Insufficient fundsRetry schedule2Stopped—$0.2087d74f75…20b8
18005FG-28235Jul 26Cedar Valley54Expired cardDonor outreach1Recovered$25$0.10d4fad4b0…6788
18006FG-28236Sep 26Cedar Valley65Insufficient fundsRetry schedule3Recovered$25$0.30be489d66…2459
18007FG-28237Jul 26Riverbend54Expired cardCard updater, then retry1Recovered$50$0.108fcbcce3…012c
18008FG-28238Aug 26Lumen Arts51Insufficient fundsRetry schedule1Not recovered—$0.104de70e72…51d8
18009FG-28239Jan 26Cedar Valley61Insufficient fundsRetry schedule1Recovered$60$0.100338144c…4ab6
18010FG-28240Apr 26Cedar Valley61Insufficient fundsRetry schedule4Recovered$60$0.404d0cc8b3…3b5b
18011FG-28241Dec 25Harbor Light14Invalid cardDonor outreach1Recovered$50$0.1077da983c…f1a6
18012FG-28242Jan 26Riverbend33Expired cardCard updater, then retry1Recovered$20$0.100df6385f…ab9a
18013FG-28243May 26Riverbend51Insufficient fundsRetry schedule2Recovered$20$0.205e0731ba…6616
18014FG-28244Jul 26Cedar Valley05Do not honorRetry schedule2Recovered$30$0.20b14cc84b…d323
18015FG-28245Nov 25Northgate54Expired cardDonor outreach0Stopped—$0.0052d414b3…1cea
18016FG-28246Oct 25Northgate51Insufficient fundsRetry schedule1Recovered$35$0.10a3ad048b…0b90
18017FG-28247Oct 25Northgate02Do not honorRetry schedule3Stopped—$0.309e4f6665…b715
18018FG-28248Apr 26Riverbend02Do not honorRetry schedule3Not recovered—$0.304c125193…5c63
18019FG-28249Jul 26Lumen ArtsR02ACH R02 closedDonor outreach1Recovered$10$0.10fca6f935…b7d1
18020FG-28250Jun 26Harbor Light02Do not honorRetry schedule3Recovered$40$0.3018258bec…1838
18021FG-28251Nov 25NorthgateR03ACH R03 no acctDonor outreach1Recovered$50$0.1024a9af35…de30
18022FG-28252Dec 25NorthgateR01ACH R01 fundsRetry schedule1Stopped—$0.101af516ae…614f
18023FG-28253Jan 26NorthgateR09ACH R01 fundsRetry schedule1Not recovered—$0.101c0f4c32…7d97
18024FG-28254Feb 26Northgate65Insufficient fundsRetry schedule1Recovered$30$0.1081b71641…d5b8
18025FG-28255May 26Northgate65Insufficient fundsRetry schedule3Not recovered—$0.306f006391…6c10
18026FG-28256Aug 26Lumen ArtsR09ACH R01 fundsRetry schedule2Recovered$10$0.2000ab6314…04ae
18027FG-28257Jul 26Cedar Valley61Insufficient fundsRetry schedule1Recovered$25$0.108cf3d9f0…e7b2
18028FG-28258Sep 26Cedar Valley51Insufficient fundsRetry schedule1Recovered$25$0.100fa120b3…2658
18029FG-28259Oct 25Cedar Valley65Insufficient fundsRetry schedule1Recovered$15$0.106d102f8f…4842
18030FG-28260Dec 25Cedar Valley05Do not honorRetry schedule3Not recovered—$0.301c9b0c3b…181c
18031FG-28261Jan 26Riverbend02Do not honorRetry schedule2Recovered$15$0.20d89feb67…0b96
18032FG-28262Dec 25Riverbend01Do not honorRetry schedule3Not recovered—$0.300f52a432…cbb2
18033FG-28263Feb 26Northgate19Issuer unavailableRetry schedule3Not recovered—$0.3097c19d65…b3ab
18034FG-28264Nov 25Northgate14Invalid cardDonor outreach1Recovered$180$0.10b16f35d8…cedb
18035FG-28265Dec 25Northgate33Expired cardDonor outreach0Stopped—$0.0019ce6838…53d5
18036FG-28266Feb 26Northgate54Expired cardCard updater, then retry1Recovered$180$0.1002644400…bc36
18037FG-28267Oct 25Riverbend05Do not honorRetry schedule3Stopped—$0.30305b79d8…7434
18038FG-28268Apr 26Riverbend51Insufficient fundsRetry schedule1Recovered$20$0.10a5e8f72d…257a
18039FG-28269Aug 26Riverbend41Lost or stolenDonor outreach0Stopped—$0.001d84a128…74d1
18040FG-28270Nov 25Lumen Arts01Do not honorRetry schedule3Stopped—$0.30a0c80096…bfe1
18041FG-28271Mar 26Lumen Arts65Insufficient fundsRetry schedule1Not recovered—$0.105e617274…dd97
18042FG-28272May 26Lumen Arts61Insufficient fundsRetry schedule1Not recovered—$0.10f1919aad…f475
18043FG-28273Jun 26Lumen Arts65Insufficient fundsRetry schedule1Not recovered—$0.1058e83438…ebfb
18044FG-28274Sep 26Lumen Arts63Suspected fraudDonor outreach0Stopped—$0.00ace61818…ed27
18045FG-28275May 26Lumen Arts05Do not honorRetry schedule3Stopped—$0.306a5c8eea…b434
18046FG-28276Sep 26Lumen Arts05Do not honorRetry schedule1Recovered$300$0.106301525e…dbd3
18047FG-28277Sep 26Northgate51Insufficient fundsRetry schedule2Stopped—$0.204f35c173…66af
18048FG-28278May 26Riverbend54Expired cardDonor outreach0Stopped—$0.002f029548…a920
18049FG-28279Jan 26Lumen Arts05Do not honorRetry schedule3Not recovered—$0.30949d16cd…3349
18050FG-28280Jan 26Lumen Arts05Do not honorRetry schedule1Recovered$20$0.10e4f4b79b…40f9

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.