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 18701 to 18750 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
18701FG-28931Oct 25Riverbend51Insufficient fundsRetry schedule1Recovered$30$0.1030276e27…8b6c
18702FG-28932Jan 26Riverbend01Do not honorRetry schedule4Recovered$30$0.409b0a1327…8778
18703FG-28933Jul 26Riverbend54Expired cardCard updater, then retry1Recovered$30$0.108144c9be…799e
18704FG-28934Oct 25Riverbend54Expired cardDonor outreach0Stopped—$0.009acc47de…c343
18705FG-28935Mar 26Riverbend61Insufficient fundsRetry schedule1Not recovered—$0.106c6a9269…a901
18706FG-28936Jun 26Riverbend33Expired cardCard updater, then retry1Recovered$90$0.104f7eb821…3edd
18707FG-28937Aug 26Riverbend51Insufficient fundsRetry schedule1Recovered$90$0.100f2c226a…db03
18708FG-28938Aug 26NorthgateR02ACH R02 closedDonor outreach0Stopped—$0.009da6ff75…785f
18709FG-28939Sep 26Harbor Light01Do not honorRetry schedule4Recovered$15$0.40e0d0c8f2…ff62
18710FG-28940Apr 26Riverbend14Invalid cardDonor outreach0Stopped—$0.00e187c05b…f0e6
18711FG-28941Jan 26Riverbend62Account closedDonor outreach0Stopped—$0.006f19efc9…e32c
18712FG-28942May 26Riverbend65Insufficient fundsRetry schedule3Not recovered—$0.30b6b21d0e…fa53
18713FG-28943Jun 26Riverbend33Expired cardCard updater, then retry1Recovered$10$0.105184cadc…98cd
18714FG-28944Oct 25Harbor Light59Suspected fraudDonor outreach1Recovered$15$0.10dab7893c…aaf5
18715FG-28945Nov 25Harbor Light78Account closedDonor outreach0Stopped—$0.00e430012d…3691
18716FG-28946Jan 26Harbor Light61Insufficient fundsRetry schedule1Recovered$15$0.10d50027d3…2d31
18717FG-28947Mar 26Harbor Light51Insufficient fundsRetry schedule3Stopped—$0.303b33e49f…1e43
18718FG-28948Jun 26Northgate65Insufficient fundsRetry schedule1Recovered$45$0.109b073174…717f
18719FG-28949Sep 26Lumen Arts51Insufficient fundsRetry schedule2Not recovered—$0.20f5543ddb…f0cb
18720FG-28950Oct 25Harbor Light54Expired cardCard updater, then retry1Recovered$20$0.10cf3c0b2c…f315
18721FG-28951Nov 25Northgate91Issuer unavailableRetry schedule1Recovered$80$0.10deae5106…f500
18722FG-28952Dec 25Northgate51Insufficient fundsRetry schedule2Recovered$80$0.20180a747b…5858
18723FG-28953Jun 26Northgate61Insufficient fundsRetry schedule2Stopped—$0.2050a83fb5…61d1
18724FG-28954Jan 26Lumen Arts33Expired cardDonor outreach0Stopped—$0.00cbc3fe00…a9c2
18725FG-28955Apr 26Northgate33Expired cardCard updater, then retry1Recovered$140$0.1017877ff9…d833
18726FG-28956Apr 26Riverbend61Insufficient fundsRetry schedule1Recovered$5$0.1026bf1c3e…b5da
18727FG-28957Oct 25Cedar Valley33Expired cardCard updater, then retry1Recovered$35$0.10d46bc34f…59a8
18728FG-28958Oct 25Harbor Light41Lost or stolenDonor outreach1Recovered$40$0.1032b0f4f2…180d
18729FG-28959Feb 26Harbor Light65Insufficient fundsRetry schedule1Recovered$40$0.10b2e6dbf1…aa0b
18730FG-28960May 26Harbor Light02Do not honorRetry schedule3Recovered$40$0.30963e1466…1038
18731FG-28961Oct 25Cedar Valley51Insufficient fundsRetry schedule3Not recovered—$0.30556dd0cb…58e0
18732FG-28962Apr 26Cedar Valley65Insufficient fundsRetry schedule2Recovered$20$0.20689770a1…2581
18733FG-28963Jan 26Harbor Light05Do not honorRetry schedule2Recovered$10$0.20222c671c…f8d2
18734FG-28964Feb 26Harbor Light78Account closedDonor outreach1Not recovered—$0.10d097c430…1a91
18735FG-28965Jun 26Harbor Light54Expired cardDonor outreach1Recovered$10$0.10f42116dd…4769
18736FG-28966May 26Northgate54Expired cardDonor outreach1Recovered$200$0.103b5bc69c…b497
18737FG-28967Nov 25Northgate51Insufficient fundsRetry schedule1Recovered$90$0.10f806a419…12df
18738FG-28968Jan 26Northgate61Insufficient fundsRetry schedule1Recovered$90$0.104026e411…69a4
18739FG-28969Jun 26Northgate05Do not honorRetry schedule2Recovered$90$0.20213e0ae6…747a
18740FG-28970Dec 25Northgate91Issuer unavailableRetry schedule2Recovered$5$0.2015111ac0…9719
18741FG-28971Feb 26Northgate51Insufficient fundsRetry schedule3Not recovered—$0.30d31ea51d…ee0c
18742FG-28972Mar 26Northgate51Insufficient fundsRetry schedule2Recovered$45$0.20a7261a15…d27a
18743FG-28973Sep 26Riverbend54Expired cardDonor outreach0Stopped—$0.00a232f598…c0e8
18744FG-28974Oct 25Northgate54Expired cardCard updater, then retry1Recovered$50$0.1086c15959…7429
18745FG-28975Jul 26Harbor Light02Do not honorRetry schedule2Recovered$40$0.2039cab5dd…f19c
18746FG-28976Mar 26Northgate61Insufficient fundsRetry schedule2Recovered$35$0.20e532038d…c5a8
18747FG-28977Jul 26Northgate65Insufficient fundsRetry schedule3Stopped—$0.302e5d3baf…4c7b
18748FG-28978Feb 26Cedar Valley33Expired cardDonor outreach0Stopped—$0.00abe53ebf…cc71
18749FG-28979Sep 26Cedar Valley54Expired cardDonor outreach1Recovered$80$0.108b533ce8…4108
18750FG-28980Feb 26Riverbend51Insufficient fundsRetry schedule1Recovered$70$0.10f35b8d87…f753

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.