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 14301 to 14350 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
14301FG-24531Sep 26Harbor Light01Do not honorRetry schedule3Recovered$15$0.306db1f9df…75eb
14302FG-24532Jul 26Lumen Arts59Suspected fraudDonor outreach0Stopped—$0.009f4b8f2f…c732
14303FG-24533May 26NorthgateR01ACH R01 fundsRetry schedule2Not recovered—$0.20b4be40be…8231
14304FG-24534Nov 25Harbor Light51Insufficient fundsRetry schedule1Recovered$25$0.100de1dcd2…7c1e
14305FG-24535Apr 26Harbor Light33Expired cardDonor outreach1Recovered$25$0.109cac244e…6949
14306FG-24536Jul 26Harbor Light54Expired cardCard updater, then retry1Recovered$25$0.10a079437c…a08d
14307FG-24537Jan 26Lumen Arts05Do not honorRetry schedule3Stopped—$0.3031b07695…b246
14308FG-24538Oct 25Harbor Light05Do not honorRetry schedule1Recovered$35$0.10848fd698…bb07
14309FG-24539Jan 26Harbor Light51Insufficient fundsRetry schedule3Stopped—$0.3091722305…25de
14310FG-24540Apr 26Harbor Light14Invalid cardDonor outreach0Stopped—$0.00344153c3…6460
14311FG-24541Jul 26Harbor Light65Insufficient fundsRetry schedule3Stopped—$0.30b58b5652…a462
14312FG-24542Aug 26Harbor Light51Insufficient fundsRetry schedule1Recovered$35$0.104052ea94…393c
14313FG-24543Feb 26Northgate41Lost or stolenDonor outreach0Stopped—$0.006987b836…fdd1
14314FG-24544Nov 25Harbor Light51Insufficient fundsRetry schedule1Recovered$425$0.104b118978…e9b5
14315FG-24545Dec 25Northgate51Insufficient fundsRetry schedule1Recovered$45$0.106048a50a…7638
14316FG-24546Nov 25Lumen Arts05Do not honorRetry schedule3Not recovered—$0.3097758f53…846a
14317FG-24547Oct 25Riverbend61Insufficient fundsRetry schedule1Not recovered—$0.101b19b4e8…dbce
14318FG-24548Feb 26Riverbend51Insufficient fundsRetry schedule1Not recovered—$0.1009d03438…56b5
14319FG-24549Feb 26Harbor Light65Insufficient fundsRetry schedule2Recovered$80$0.201731e076…1254
14320FG-24550Nov 25Riverbend02Do not honorRetry schedule3Stopped—$0.30e9b9a959…b9fb
14321FG-24551Nov 25Harbor Light43Lost or stolenDonor outreach0Stopped—$0.00aafe1972…4e14
14322FG-24552Oct 25Riverbend51Insufficient fundsRetry schedule4Recovered$35$0.40a2812fc3…76a6
14323FG-24553Nov 25Riverbend54Expired cardDonor outreach0Stopped—$0.0036cbff7b…536d
14324FG-24554Dec 25Riverbend61Insufficient fundsRetry schedule2Recovered$35$0.20591fddd1…1869
14325FG-24555Mar 26Riverbend65Insufficient fundsRetry schedule1Recovered$35$0.10e97ecbb7…f07f
14326FG-24556Apr 26Riverbend59Suspected fraudDonor outreach1Recovered$35$0.10c81cff3c…cc8f
14327FG-24557Aug 26Riverbend91Issuer unavailableRetry schedule1Recovered$35$0.10a703dd67…7fc6
14328FG-24558Dec 25Harbor Light51Insufficient fundsRetry schedule2Recovered$90$0.204d4b083a…fdf9
14329FG-24559Oct 25Northgate65Insufficient fundsRetry schedule3Recovered$40$0.300e3b33ae…70d0
14330FG-24560Dec 25Northgate51Insufficient fundsRetry schedule1Recovered$40$0.10c204c3fb…58a3
14331FG-24561Aug 26Cedar Valley02Do not honorRetry schedule3Stopped—$0.301cd127b7…21f0
14332FG-24562Mar 26Riverbend51Insufficient fundsRetry schedule1Not recovered—$0.10c3b9c6e5…0126
14333FG-24563May 26Riverbend54Expired cardCard updater, then retry1Recovered$60$0.106a748a08…e0fd
14334FG-24564Jul 26Cedar Valley91Issuer unavailableRetry schedule1Recovered$10$0.101f006c46…466e
14335FG-24565May 26RiverbendR01ACH R01 fundsRetry schedule2Not recovered—$0.20fb5d0647…171a
14336FG-24566Jan 26Northgate61Insufficient fundsRetry schedule2Not recovered—$0.202d8ca45a…a2d6
14337FG-24567Feb 26Riverbend51Insufficient fundsRetry schedule1Recovered$10$0.102641fa70…c99f
14338FG-24568Mar 26Riverbend65Insufficient fundsRetry schedule2Stopped—$0.20a02eb1d8…8dd1
14339FG-24569Oct 25Cedar Valley51Insufficient fundsRetry schedule1Recovered$120$0.103067819a…75f5
14340FG-24570May 26Cedar Valley54Expired cardDonor outreach0Stopped—$0.00de97dae7…84d1
14341FG-24571Aug 26Cedar Valley51Insufficient fundsRetry schedule3Not recovered—$0.304f751d19…4bde
14342FG-24572Jan 26Harbor Light54Expired cardDonor outreach0Stopped—$0.002465d32f…0d28
14343FG-24573Nov 25Riverbend65Insufficient fundsRetry schedule2Recovered$25$0.20a9c63e67…b0a4
14344FG-24574Jun 26Riverbend65Insufficient fundsRetry schedule4Recovered$25$0.40a35fd101…c8e4
14345FG-24575Oct 25Harbor Light61Insufficient fundsRetry schedule1Recovered$90$0.103bf661fc…de8f
14346FG-24576May 26Harbor Light57Invalid cardDonor outreach1Recovered$90$0.10fa1680cf…9a47
14347FG-24577Jan 26Riverbend01Do not honorRetry schedule3Stopped—$0.3086eb07fc…ad51
14348FG-24578Mar 26Riverbend02Do not honorRetry schedule3Stopped—$0.30ff3256f8…21c6
14349FG-24579Jul 26Harbor Light54Expired cardCard updater, then retry1Recovered$45$0.10d3801dba…d178
14350FG-24580Dec 25Lumen Arts51Insufficient fundsRetry schedule1Recovered$70$0.101225deae…0493

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.