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 34401 to 34450 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
34401FG-44631Oct 25Cedar Valley54Expired cardCard updater, then retry1Recovered$15$0.1061e1878c…0de1
34402FG-44632Mar 26Cedar Valley65Insufficient fundsRetry schedule1Recovered$15$0.108c3a665a…7528
34403FG-44633Apr 26Cedar Valley02Do not honorRetry schedule3Not recovered—$0.302580a6b0…f5ef
34404FG-44634May 26Cedar Valley51Insufficient fundsRetry schedule2Recovered$35$0.208ce84101…39d6
34405FG-44635Mar 26Harbor Light59Suspected fraudDonor outreach1Recovered$30$0.1033c0b62f…7c5a
34406FG-44636Aug 26Harbor Light02Do not honorRetry schedule2Recovered$30$0.202294e194…2221
34407FG-44637Jun 26Harbor Light65Insufficient fundsRetry schedule3Recovered$160$0.30de37ffa6…90fa
34408FG-44638Jan 26Northgate65Insufficient fundsRetry schedule1Recovered$60$0.10e71a44d2…9543
34409FG-44639Mar 26Harbor Light65Insufficient fundsRetry schedule1Recovered$20$0.10bda3e9d7…e313
34410FG-44640Oct 25Riverbend61Insufficient fundsRetry schedule1Recovered$15$0.101c51f690…b5b3
34411FG-44641Nov 25Cedar Valley51Insufficient fundsRetry schedule3Not recovered—$0.304d00f430…b471
34412FG-44642Apr 26Cedar Valley96Issuer unavailableRetry schedule1Recovered$10$0.102b7503f1…7886
34413FG-44643Oct 25Riverbend65Insufficient fundsRetry schedule1Recovered$20$0.1009e7fef1…5bc5
34414FG-44644Mar 26Riverbend54Expired cardCard updater, then retry1Recovered$15$0.10bc957f92…7bef
34415FG-44645Feb 26Cedar ValleyR02ACH R02 closedDonor outreach0Stopped—$0.003503aa7e…1081
34416FG-44646Apr 26Cedar ValleyR09ACH R01 fundsRetry schedule1Recovered$40$0.10b3a60101…a47c
34417FG-44647Aug 26Cedar ValleyR01ACH R01 fundsRetry schedule1Recovered$40$0.1004537fda…d896
34418FG-44648Jul 26Cedar Valley54Expired cardCard updater, then retry1Not recovered—$0.107fef3ab4…5cae
34419FG-44649Nov 25Lumen Arts51Insufficient fundsRetry schedule1Recovered$70$0.10a6f8a365…7ccf
34420FG-44650Jun 26Lumen Arts54Expired cardCard updater, then retry1Recovered$70$0.109e3eb3f6…ee06
34421FG-44651Nov 25Northgate05Do not honorRetry schedule1Recovered$50$0.10b2488821…0606
34422FG-44652Mar 26Northgate51Insufficient fundsRetry schedule2Recovered$50$0.20e0e1e9ac…f96b
34423FG-44653May 26Northgate51Insufficient fundsRetry schedule3Not recovered—$0.30cc4887b2…951b
34424FG-44654Jul 26Northgate54Expired cardCard updater, then retry1Recovered$50$0.106f697c47…a162
34425FG-44655Jul 26Northgate59Suspected fraudDonor outreach0Stopped—$0.002b24eea7…7123
34426FG-44656Sep 26Northgate14Invalid cardDonor outreach0Stopped—$0.002d31977f…e99f
34427FG-44657Mar 26Riverbend33Expired cardCard updater, then retry1Recovered$20$0.10d9a5f829…f75b
34428FG-44658Nov 25Cedar Valley51Insufficient fundsRetry schedule1Recovered$30$0.10f7266a77…1e7c
34429FG-44659Jan 26Lumen Arts54Expired cardCard updater, then retry1Recovered$15$0.101d20c6d4…4901
34430FG-44660Oct 25Riverbend14Invalid cardDonor outreach0Stopped—$0.001a831530…0277
34431FG-44661May 26Riverbend01Do not honorRetry schedule3Recovered$25$0.301a4f09dc…380e
34432FG-44662Jul 26Riverbend33Expired cardCard updater, then retry1Recovered$25$0.1087810883…e335
34433FG-44663Nov 25Riverbend65Insufficient fundsRetry schedule1Recovered$40$0.10d479c562…d72e
34434FG-44664Mar 26Harbor Light51Insufficient fundsRetry schedule1Recovered$45$0.109c9467ed…9219
34435FG-44665Oct 25Harbor Light54Expired cardDonor outreach0Stopped—$0.006a1fecfc…c676
34436FG-44666Dec 25Cedar Valley05Do not honorRetry schedule1Recovered$10$0.10054949b5…8397
34437FG-44667Nov 25Northgate33Expired cardCard updater, then retry1Recovered$110$0.10f23eb66b…62ca
34438FG-44668May 26Cedar Valley63Suspected fraudDonor outreach0Not recovered—$0.001bff5a84…72ec
34439FG-44669Jul 26Cedar Valley65Insufficient fundsRetry schedule2Not recovered—$0.207b956d7a…a7e3
34440FG-44670Mar 26Riverbend05Do not honorRetry schedule3Not recovered—$0.302bcb1bf3…94d0
34441FG-44671Nov 25Riverbend78Account closedDonor outreach0Stopped—$0.000337d7ed…37ae
34442FG-44672Jan 26Riverbend33Expired cardDonor outreach1Recovered$50$0.10e2048781…5e84
34443FG-44673Aug 26Riverbend14Invalid cardDonor outreach0Stopped—$0.006b8c26c1…c1f1
34444FG-44674Apr 26Riverbend05Do not honorRetry schedule2Recovered$20$0.2019ba357c…2428
34445FG-44675May 26Riverbend01Do not honorRetry schedule3Not recovered—$0.3066cfbcd1…c6d8
34446FG-44676Aug 26Cedar Valley05Do not honorRetry schedule3Not recovered—$0.30b2e55ed9…18ac
34447FG-44677Nov 25Northgate54Expired cardDonor outreach0Stopped—$0.00cc62f348…443e
34448FG-44678May 26Northgate54Expired cardCard updater, then retry1Recovered$45$0.101fe77d3a…b628
34449FG-44679Apr 26NorthgateR02ACH R02 closedDonor outreach0Stopped—$0.0004dd4f68…505d
34450FG-44680Aug 26NorthgateR09ACH R01 fundsRetry schedule2Recovered$10$0.20c6c54bda…6b59

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.