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 1 to 50 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
1FG-10231May 26Lumen Arts54Expired cardCard updater, then retry1Recovered$100$0.1052ad60e0…dd72
2FG-10232Jun 26Lumen Arts61Insufficient fundsRetry schedule1Recovered$100$0.101dc93624…3ba9
3FG-10233Dec 25Harbor Light54Expired cardDonor outreach0Stopped—$0.00bdfebf5e…0684
4FG-10234Mar 26Harbor Light05Do not honorRetry schedule2Recovered$20$0.2084f8e395…02da
5FG-10235Mar 26Cedar Valley54Expired cardCard updater, then retry1Recovered$90$0.10ab749be2…aa1b
6FG-10236Feb 26Lumen Arts14Invalid cardDonor outreach1Recovered$90$0.107c8d0a19…1dfe
7FG-10237Apr 26Harbor Light65Insufficient fundsRetry schedule3Not recovered—$0.30d231e3f6…af61
8FG-10238Aug 26Harbor Light63Suspected fraudDonor outreach0Not recovered—$0.00d237b723…a270
9FG-10239Sep 26Harbor Light65Insufficient fundsRetry schedule3Not recovered—$0.30e30bd635…eafd
10FG-10240Apr 26Riverbend02Do not honorRetry schedule1Recovered$20$0.105e06ff4e…acd7
11FG-10241May 26Riverbend54Expired cardDonor outreach0Stopped—$0.0037ffe846…a470
12FG-10242Sep 26Riverbend61Insufficient fundsRetry schedule1Recovered$20$0.101a82b9da…61d1
13FG-10243Dec 25Riverbend65Insufficient fundsRetry schedule2Recovered$20$0.20d2308235…0dc2
14FG-10244Jul 26Riverbend61Insufficient fundsRetry schedule3Stopped—$0.30da987b74…c99c
15FG-10245Aug 26Cedar Valley54Expired cardDonor outreach0Stopped—$0.004647bf10…dd50
16FG-10246Aug 26Cedar Valley54Expired cardCard updater, then retry1Recovered$20$0.10d9ca4f77…03bc
17FG-10247Mar 26Riverbend51Insufficient fundsRetry schedule2Not recovered—$0.20ed9561b6…e4c0
18FG-10248Oct 25Riverbend51Insufficient fundsRetry schedule3Stopped—$0.3097f05bf5…651a
19FG-10249Feb 26Riverbend62Account closedDonor outreach0Stopped—$0.00c39b0599…b519
20FG-10250Jul 26Riverbend54Expired cardDonor outreach1Recovered$15$0.10b5749d11…085e
21FG-10251Dec 25Harbor Light51Insufficient fundsRetry schedule2Not recovered—$0.20315bc970…7cb0
22FG-10252Dec 25Riverbend51Insufficient fundsRetry schedule2Recovered$20$0.207e15cece…2525
23FG-10253Feb 26Riverbend59Suspected fraudDonor outreach1Recovered$20$0.1032d2b984…95ba
24FG-10254Jul 26Riverbend63Suspected fraudDonor outreach0Stopped—$0.00618f44eb…1428
25FG-10255Sep 26Riverbend51Insufficient fundsRetry schedule2Recovered$20$0.20671f26fe…495e
26FG-10256Oct 25Cedar Valley54Expired cardCard updater, then retry2Not recovered—$0.2038159285…9fc0
27FG-10257Jan 26Cedar Valley02Do not honorRetry schedule3Not recovered—$0.307de7ce46…7e82
28FG-10258Mar 26Cedar Valley51Insufficient fundsRetry schedule2Recovered$90$0.202670c1a0…22ea
29FG-10259Jul 26Cedar Valley46Account closedDonor outreach1Recovered$90$0.1057b9a0a5…f651
30FG-10260Aug 26Cedar Valley65Insufficient fundsRetry schedule3Recovered$90$0.302ae0b41d…85fe
31FG-10261Oct 25Northgate15Invalid cardDonor outreach1Not recovered—$0.1016de5322…9676
32FG-10262Dec 25Northgate61Insufficient fundsRetry schedule2Recovered$50$0.20bd413d8b…6496
33FG-10263Apr 26Northgate01Do not honorRetry schedule1Recovered$50$0.10eee9f4d4…08d6
34FG-10264Nov 25Northgate51Insufficient fundsRetry schedule2Recovered$40$0.20068ec9e0…9217
35FG-10265Jun 26Riverbend51Insufficient fundsRetry schedule3Not recovered—$0.30d174953f…8f2d
36FG-10266May 26Cedar Valley54Expired cardCard updater, then retry1Recovered$10$0.102bf223c1…857d
37FG-10267Jul 26Cedar Valley54Expired cardCard updater, then retry1Recovered$10$0.10c81b1b17…5f5f
38FG-10268Sep 26Harbor Light02Do not honorRetry schedule3Not recovered—$0.3045d4e1b1…27fc
39FG-10269Mar 26Cedar Valley51Insufficient fundsRetry schedule1Recovered$30$0.10e48cb8c5…b1c6
40FG-10270Jun 26Cedar Valley54Expired cardDonor outreach1Recovered$30$0.10e9adbdda…418e
41FG-10271Jul 26Cedar Valley51Insufficient fundsRetry schedule1Recovered$30$0.105be3c0bd…c350
42FG-10272Sep 26Lumen Arts65Insufficient fundsRetry schedule1Recovered$15$0.103a91c8aa…f217
43FG-10273Oct 25Riverbend61Insufficient fundsRetry schedule1Recovered$70$0.10d73ef636…0c7b
44FG-10274Oct 25Riverbend54Expired cardDonor outreach1Recovered$60$0.1043efad50…bb39
45FG-10275Jul 26Harbor Light61Insufficient fundsRetry schedule2Recovered$25$0.2057eacdd7…bb5d
46FG-10276Dec 25Riverbend05Do not honorRetry schedule1Recovered$60$0.10884badb7…0812
47FG-10277May 26Riverbend91Issuer unavailableRetry schedule1Recovered$60$0.10f624037a…314a
48FG-10278Jun 26Riverbend33Expired cardDonor outreach0Stopped—$0.00a1086440…196d
49FG-10279Feb 26Lumen ArtsR02ACH R02 closedDonor outreach1Recovered$110$0.10bd759e76…edea
50FG-10280Jan 26Northgate59Suspected fraudDonor outreach0Stopped—$0.008895615a…d0aa

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.