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 1801 to 1850 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
1801FG-12031Jul 26Riverbend05Do not honorRetry schedule1Recovered$20$0.10d8e96159…73c9
1802FG-12032Mar 26Cedar Valley96Issuer unavailableRetry schedule3Recovered$35$0.30c37190e9…cad0
1803FG-12033Sep 26Cedar Valley05Do not honorRetry schedule3Not recovered—$0.3089ee2274…30c1
1804FG-12034Dec 25Harbor Light19Issuer unavailableRetry schedule1Recovered$15$0.10feec84a6…30ec
1805FG-12035Feb 26Harbor Light54Expired cardCard updater, then retry1Not recovered—$0.10ee6aca5f…dd7c
1806FG-12036Mar 26Harbor Light01Do not honorRetry schedule3Stopped—$0.30a067c6aa…1987
1807FG-12037Jan 26Lumen Arts63Suspected fraudDonor outreach0Not recovered—$0.0091c7832f…5a83
1808FG-12038Mar 26Lumen Arts51Insufficient fundsRetry schedule2Recovered$20$0.20eece4501…a02b
1809FG-12039Jul 26Lumen Arts51Insufficient fundsRetry schedule2Not recovered—$0.20c186dafb…e82e
1810FG-12040Feb 26Lumen Arts91Issuer unavailableRetry schedule1Recovered$100$0.10ab12d772…9990
1811FG-12041Jul 26Lumen Arts41Lost or stolenDonor outreach0Stopped—$0.00ee0dbcd2…47f5
1812FG-12042Apr 26Riverbend61Insufficient fundsRetry schedule1Not recovered—$0.10fe08abd3…8f93
1813FG-12043Jan 26Harbor LightR01ACH R01 fundsRetry schedule1Recovered$20$0.106cce510a…638d
1814FG-12044Jan 26Northgate63Suspected fraudDonor outreach1Recovered$150$0.10b06e76ee…d424
1815FG-12045Feb 26Northgate02Do not honorRetry schedule3Not recovered—$0.304cb03566…d137
1816FG-12046Feb 26Northgate54Expired cardDonor outreach1Recovered$100$0.109f678303…4231
1817FG-12047Mar 26Northgate33Expired cardCard updater, then retry1Recovered$100$0.10bc278f08…ab98
1818FG-12048Jul 26Northgate61Insufficient fundsRetry schedule3Stopped—$0.3031041c6c…d65a
1819FG-12049Nov 25NorthgateR01ACH R01 fundsRetry schedule1Recovered$35$0.10dedcd5aa…60f9
1820FG-12050Apr 26Northgate54Expired cardCard updater, then retry1Recovered$60$0.1023e4aaca…2c72
1821FG-12051Jun 26Northgate51Insufficient fundsRetry schedule1Recovered$60$0.1060ac19d1…6062
1822FG-12052Sep 26Northgate05Do not honorRetry schedule3Not recovered—$0.30dae90118…61b7
1823FG-12053Feb 26Harbor Light41Lost or stolenCard updater, then retry1Recovered$25$0.1022b98dd2…79cb
1824FG-12054Mar 26Harbor Light65Insufficient fundsRetry schedule1Recovered$25$0.1077145207…4b15
1825FG-12055Oct 25Northgate51Insufficient fundsRetry schedule3Not recovered—$0.30fb1e924a…634c
1826FG-12056Aug 26Northgate61Insufficient fundsRetry schedule3Stopped—$0.30f87609af…f1b3
1827FG-12057Dec 25Northgate54Expired cardDonor outreach0Stopped—$0.005771de47…74e4
1828FG-12058Dec 25Riverbend33Expired cardDonor outreach0Stopped—$0.00166d6df2…79c4
1829FG-12059Dec 25Cedar Valley91Issuer unavailableRetry schedule1Recovered$5$0.10ded3bc16…fefa
1830FG-12060Jul 26Cedar Valley61Insufficient fundsRetry schedule2Not recovered—$0.205f690fe7…d21a
1831FG-12061Apr 26Harbor Light05Do not honorRetry schedule3Not recovered—$0.30d415849d…377a
1832FG-12062Feb 26Riverbend51Insufficient fundsRetry schedule2Recovered$15$0.20d61f5b30…d8d6
1833FG-12063Aug 26Riverbend63Suspected fraudDonor outreach0Not recovered—$0.0095cb99e4…209d
1834FG-12064Nov 25NorthgateR01ACH R01 fundsRetry schedule1Recovered$150$0.10db3e18b4…b3ce
1835FG-12065Jun 26NorthgateR09ACH R01 fundsRetry schedule1Recovered$150$0.1055c1d8d7…809d
1836FG-12066Oct 25Harbor Light51Insufficient fundsRetry schedule2Recovered$30$0.20b0a3ee28…317b
1837FG-12067Jan 26Harbor Light33Expired cardCard updater, then retry1Not recovered—$0.10de37c5b6…85c6
1838FG-12068Mar 26Harbor Light65Insufficient fundsRetry schedule3Stopped—$0.30735a4c09…4912
1839FG-12069Jun 26Harbor Light51Insufficient fundsRetry schedule3Not recovered—$0.302afa223e…76af
1840FG-12070Sep 26NorthgateR09ACH R01 fundsRetry schedule1Recovered$80$0.10edc45326…4e09
1841FG-12071Jan 26Northgate54Expired cardDonor outreach0Stopped—$0.0007bf740a…c27a
1842FG-12072Oct 25Harbor Light46Account closedDonor outreach1Recovered$50$0.10d68719a4…2e46
1843FG-12073Apr 26Harbor Light02Do not honorRetry schedule3Stopped—$0.30affeb00c…103b
1844FG-12074May 26Lumen Arts61Insufficient fundsRetry schedule2Recovered$35$0.20b65d8604…dbe6
1845FG-12075Nov 25Cedar Valley65Insufficient fundsRetry schedule1Recovered$25$0.101dbb1bcd…3785
1846FG-12076Jan 26Cedar Valley61Insufficient fundsRetry schedule3Recovered$25$0.301b980b1c…4c8a
1847FG-12077Apr 26Cedar Valley65Insufficient fundsRetry schedule2Recovered$25$0.20f41984f0…241a
1848FG-12078Jun 26Cedar Valley78Account closedDonor outreach0Stopped—$0.00c07db3f0…1244
1849FG-12079Sep 26Cedar Valley61Insufficient fundsRetry schedule1Recovered$25$0.10f8f79ce6…4004
1850FG-12080Dec 25Northgate33Expired cardCard updater, then retry1Recovered$60$0.10f9d970da…348b

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.