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 2401 to 2450 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
2401FG-12631Oct 25Riverbend51Insufficient fundsRetry schedule3Not recovered—$0.30dbfdd40c…110b
2402FG-12632Nov 25Riverbend54Expired cardDonor outreach0Stopped—$0.009abab629…a338
2403FG-12633Dec 25Riverbend05Do not honorRetry schedule3Not recovered—$0.30ffd16eb3…2b53
2404FG-12634Jan 26Riverbend01Do not honorRetry schedule3Not recovered—$0.30631eca40…43b6
2405FG-12635Mar 26Riverbend61Insufficient fundsRetry schedule3Not recovered—$0.300c0bcc53…3186
2406FG-12636Jun 26Riverbend59Suspected fraudDonor outreach0Stopped—$0.00f949c7df…0825
2407FG-12637Aug 26Riverbend54Expired cardCard updater, then retry1Recovered$10$0.10b43f2031…c047
2408FG-12638Jun 26Northgate65Insufficient fundsRetry schedule1Recovered$20$0.10e0dfd5d2…c984
2409FG-12639Sep 26Northgate51Insufficient fundsRetry schedule2Recovered$20$0.20dd4f64cc…3e59
2410FG-12640Dec 25Riverbend54Expired cardCard updater, then retry1Recovered$10$0.107f96a5c9…260e
2411FG-12641Jun 26Riverbend61Insufficient fundsRetry schedule3Not recovered—$0.30e5d215f9…5c40
2412FG-12642Aug 26Harbor Light65Insufficient fundsRetry schedule2Recovered$350$0.20aad01de6…e978
2413FG-12643Oct 25Cedar Valley05Do not honorRetry schedule1Recovered$30$0.10eb040193…cb22
2414FG-12644Feb 26Harbor Light54Expired cardCard updater, then retry1Recovered$30$0.103a5fdbc8…8d8f
2415FG-12645Aug 26Harbor Light54Expired cardDonor outreach1Not recovered—$0.10e0889052…ffd8
2416FG-12646Oct 25Harbor Light59Suspected fraudDonor outreach1Recovered$80$0.10be4abc3c…169c
2417FG-12647Dec 25Harbor Light51Insufficient fundsRetry schedule2Recovered$80$0.206c1c8a13…fcb0
2418FG-12648Nov 25Cedar Valley59Suspected fraudDonor outreach0Stopped—$0.00a860977d…5a09
2419FG-12649Jan 26NorthgateR01ACH R01 fundsRetry schedule2Recovered$30$0.20069813dc…58bb
2420FG-12650May 26Northgate65Insufficient fundsRetry schedule1Not recovered—$0.108b2d4262…9a90
2421FG-12651Jul 26Northgate78Account closedDonor outreach0Stopped—$0.00d9e75832…5095
2422FG-12652Oct 25NorthgateR09ACH R01 fundsRetry schedule1Not recovered—$0.109202562d…5cbc
2423FG-12653Aug 26Harbor Light51Insufficient fundsRetry schedule3Recovered$20$0.304cdf19c8…10c5
2424FG-12654Sep 26Harbor Light61Insufficient fundsRetry schedule1Recovered$20$0.10ee63e24e…0ef4
2425FG-12655Dec 25Riverbend51Insufficient fundsRetry schedule1Recovered$35$0.108277327d…acb1
2426FG-12656Oct 25Riverbend62Account closedDonor outreach0Stopped—$0.00ac5a8bf3…8682
2427FG-12657Jul 26Riverbend51Insufficient fundsRetry schedule3Not recovered—$0.302967aabd…07f4
2428FG-12658Oct 25Riverbend54Expired cardCard updater, then retry1Recovered$30$0.10c17353e8…d3e0
2429FG-12659Dec 25Riverbend61Insufficient fundsRetry schedule2Recovered$30$0.20014ca73a…24d0
2430FG-12660Apr 26Riverbend65Insufficient fundsRetry schedule1Recovered$30$0.10eb0e769a…7002
2431FG-12661Sep 26Riverbend51Insufficient fundsRetry schedule1Recovered$30$0.108be3e0aa…baf6
2432FG-12662Feb 26Riverbend51Insufficient fundsRetry schedule1Recovered$30$0.1040424121…ce9b
2433FG-12663Jun 26Cedar Valley54Expired cardCard updater, then retry1Recovered$30$0.10a0933562…3604
2434FG-12664Jan 26Lumen Arts54Expired cardDonor outreach0Stopped—$0.00e024f84c…c76b
2435FG-12665Dec 25Lumen Arts61Insufficient fundsRetry schedule3Recovered$120$0.301415b247…e203
2436FG-12666Dec 25Lumen Arts43Lost or stolenDonor outreach0Stopped—$0.00a3960ef3…2636
2437FG-12667Nov 25Riverbend61Insufficient fundsRetry schedule3Not recovered—$0.300e8ac6c9…7490
2438FG-12668Jul 26Harbor Light65Insufficient fundsRetry schedule1Recovered$25$0.1096b1422a…1a48
2439FG-12669Jan 26Lumen Arts54Expired cardCard updater, then retry1Recovered$70$0.10a11d4a04…286e
2440FG-12670Mar 26Northgate61Insufficient fundsRetry schedule2Recovered$30$0.20191db250…4263
2441FG-12671Nov 25Harbor Light51Insufficient fundsRetry schedule3Not recovered—$0.30e240868c…6387
2442FG-12672Apr 26Harbor Light19Issuer unavailableRetry schedule4Recovered$70$0.40eda2211a…9650
2443FG-12673Sep 26Harbor Light54Expired cardDonor outreach0Stopped—$0.00c4854307…e726
2444FG-12674Oct 25Harbor Light59Suspected fraudDonor outreach1Not recovered—$0.100060010f…ff0e
2445FG-12675Dec 25Riverbend33Expired cardCard updater, then retry1Recovered$30$0.1013a6eaa0…9963
2446FG-12676Jan 26Harbor Light05Do not honorRetry schedule1Recovered$45$0.106d99f59a…f4af
2447FG-12677Apr 26Harbor Light01Do not honorRetry schedule3Stopped—$0.308e00801b…2c34
2448FG-12678Sep 26Northgate43Lost or stolenDonor outreach1Recovered$70$0.108a816ead…f1f0
2449FG-12679Jan 26Riverbend61Insufficient fundsRetry schedule3Recovered$35$0.300d96c6a9…ec9a
2450FG-12680Jul 26Riverbend05Do not honorRetry schedule4Recovered$35$0.40bafb0a6b…755e

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.