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 25401 to 25450 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
25401FG-35631Nov 25Harbor Light51Insufficient fundsRetry schedule3Recovered$50$0.30c99ec15d…302e
25402FG-35632Sep 26Harbor Light54Expired cardDonor outreach1Recovered$50$0.10ba1aa99e…4582
25403FG-35633Jun 26Harbor Light02Do not honorRetry schedule3Stopped—$0.303964d5f1…26dd
25404FG-35634Sep 26Harbor Light51Insufficient fundsRetry schedule1Recovered$60$0.10e8d03c89…dd52
25405FG-35635Feb 26Harbor Light54Expired cardCard updater, then retry1Recovered$90$0.100edf8351…6485
25406FG-35636Sep 26Cedar Valley51Insufficient fundsRetry schedule1Recovered$30$0.10e4975f8a…b6c5
25407FG-35637Jul 26Cedar Valley43Lost or stolenDonor outreach1Recovered$15$0.1082ad861d…7817
25408FG-35638Jun 26Lumen Arts51Insufficient fundsRetry schedule1Recovered$25$0.10774bcce9…1d4a
25409FG-35639Mar 26Riverbend51Insufficient fundsRetry schedule1Recovered$15$0.108e7db5c9…c6c6
25410FG-35640Jul 26Northgate51Insufficient fundsRetry schedule1Recovered$50$0.107f35af8a…bd23
25411FG-35641Feb 26Harbor Light51Insufficient fundsRetry schedule2Recovered$80$0.2079783f96…5e88
25412FG-35642Sep 26Harbor Light54Expired cardCard updater, then retry1Recovered$80$0.10eec41ac2…570a
25413FG-35643Dec 25Cedar Valley02Do not honorRetry schedule1Recovered$20$0.10b2c2b55c…9e5d
25414FG-35644Nov 25Cedar Valley51Insufficient fundsRetry schedule1Recovered$110$0.1074b41a20…7ed4
25415FG-35645Apr 26Harbor Light05Do not honorRetry schedule3Not recovered—$0.304df2d76e…c64a
25416FG-35646May 26Harbor Light61Insufficient fundsRetry schedule3Not recovered—$0.3034c91f64…b5a5
25417FG-35647Jul 26Lumen Arts19Issuer unavailableRetry schedule1Recovered$100$0.1071f9a436…3ac3
25418FG-35648May 26Harbor Light43Lost or stolenCard updater, then retry1Not recovered—$0.103ad5199d…36de
25419FG-35649May 26Riverbend02Do not honorRetry schedule3Recovered$40$0.30866cb3ad…f1b6
25420FG-35650Jun 26Riverbend33Expired cardCard updater, then retry1Recovered$40$0.1054233f7c…33e2
25421FG-35651Nov 25Cedar ValleyR01ACH R01 fundsRetry schedule1Recovered$20$0.10c3c3b2de…084b
25422FG-35652Sep 26NorthgateR03ACH R03 no acctDonor outreach1Recovered$50$0.10e7766c82…d6b4
25423FG-35653Nov 25Cedar Valley51Insufficient fundsRetry schedule2Recovered$50$0.2050001ed6…0f56
25424FG-35654Jan 26Cedar Valley33Expired cardCard updater, then retry1Recovered$50$0.10815da3e7…3075
25425FG-35655Jun 26Lumen Arts54Expired cardCard updater, then retry1Recovered$120$0.10b502ee36…4c3f
25426FG-35656Sep 26Lumen Arts01Do not honorRetry schedule3Not recovered—$0.30cf553b84…84be
25427FG-35657Apr 26Lumen Arts33Expired cardDonor outreach0Stopped—$0.00a3609487…58bf
25428FG-35658Jun 26Lumen Arts61Insufficient fundsRetry schedule2Recovered$225$0.20a8e29251…7bf6
25429FG-35659Jul 26Lumen Arts51Insufficient fundsRetry schedule4Recovered$225$0.40f255f095…459c
25430FG-35660Jul 26Harbor Light51Insufficient fundsRetry schedule2Not recovered—$0.2003252941…f5c5
25431FG-35661Dec 25Riverbend05Do not honorRetry schedule3Recovered$40$0.30a40f50f6…3adb
25432FG-35662Jan 26Riverbend61Insufficient fundsRetry schedule2Recovered$15$0.20f79ccbac…ff56
25433FG-35663Dec 25Riverbend14Invalid cardDonor outreach0Stopped—$0.0083bf308d…02ba
25434FG-35664Jan 26Riverbend54Expired cardCard updater, then retry1Recovered$10$0.10f656a51d…67ae
25435FG-35665Jun 26Riverbend51Insufficient fundsRetry schedule2Recovered$10$0.20e74d436d…c7cf
25436FG-35666Apr 26Cedar Valley05Do not honorRetry schedule3Recovered$20$0.30e70a0d03…17af
25437FG-35667Mar 26Riverbend51Insufficient fundsRetry schedule1Recovered$15$0.1044ab18b5…3347
25438FG-35668Jan 26Riverbend61Insufficient fundsRetry schedule3Recovered$130$0.3023baeb6f…3b87
25439FG-35669Jul 26Riverbend63Suspected fraudDonor outreach0Stopped—$0.00287099da…a293
25440FG-35670Sep 26Riverbend61Insufficient fundsRetry schedule1Recovered$130$0.107d7c803e…3f70
25441FG-35671Oct 25Riverbend51Insufficient fundsRetry schedule1Recovered$10$0.10379261d1…4d70
25442FG-35672Jun 26Riverbend05Do not honorRetry schedule3Not recovered—$0.30deec5ea3…f702
25443FG-35673Jan 26Riverbend33Expired cardCard updater, then retry1Recovered$50$0.10b038a9ef…a67f
25444FG-35674Jun 26Riverbend61Insufficient fundsRetry schedule3Not recovered—$0.302eb9008c…869b
25445FG-35675Aug 26Riverbend51Insufficient fundsRetry schedule4Recovered$50$0.400d5001af…e0d8
25446FG-35676Jan 26Cedar Valley01Do not honorRetry schedule4Recovered$40$0.40d1826615…8fc8
25447FG-35677Aug 26Harbor Light33Expired cardCard updater, then retry1Recovered$60$0.10b3e75ba8…fec0
25448FG-35678May 26Harbor Light54Expired cardCard updater, then retry1Recovered$10$0.1091610658…d4b3
25449FG-35679Jan 26Harbor Light54Expired cardCard updater, then retry1Recovered$50$0.10f66817f3…328e
25450FG-35680Jul 26Harbor Light01Do not honorRetry schedule3Not recovered—$0.30c19606c1…ac09

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.