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 10001 to 10050 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
10001FG-20231May 26Northgate59Suspected fraudDonor outreach0Not recovered—$0.007bb87f19…cc8c
10002FG-20232Aug 26Northgate05Do not honorRetry schedule1Recovered$10$0.10bb797ee7…40ee
10003FG-20233Oct 25Riverbend62Account closedDonor outreach1Recovered$60$0.105ae252e7…7c35
10004FG-20234Nov 25Northgate51Insufficient fundsRetry schedule1Recovered$70$0.101d72a5ae…e4fa
10005FG-20235Mar 26Northgate05Do not honorRetry schedule3Not recovered—$0.305ed58549…d671
10006FG-20236May 26Northgate51Insufficient fundsRetry schedule4Recovered$70$0.409478dbc0…00d9
10007FG-20237Jun 26Northgate01Do not honorRetry schedule3Stopped—$0.30411ef83c…9588
10008FG-20238Nov 25Cedar Valley61Insufficient fundsRetry schedule1Recovered$15$0.100b04b2e6…bb88
10009FG-20239Dec 25Cedar Valley61Insufficient fundsRetry schedule1Recovered$15$0.100f4a6528…fd1c
10010FG-20240May 26Cedar Valley91Issuer unavailableRetry schedule1Recovered$15$0.1090e68d69…84ef
10011FG-20241Sep 26Riverbend54Expired cardCard updater, then retry1Recovered$50$0.102dcea25e…7386
10012FG-20242Oct 25Riverbend01Do not honorRetry schedule1Recovered$25$0.10805d3f20…493e
10013FG-20243Jan 26Riverbend51Insufficient fundsRetry schedule1Recovered$25$0.10500358cc…d185
10014FG-20244Jul 26Riverbend62Account closedDonor outreach0Stopped—$0.0049fe4de5…ffc5
10015FG-20245Oct 25Harbor Light65Insufficient fundsRetry schedule1Recovered$70$0.10425d43f8…c6ea
10016FG-20246Mar 26Harbor Light65Insufficient fundsRetry schedule1Recovered$70$0.10ac55e864…58d7
10017FG-20247May 26Harbor Light51Insufficient fundsRetry schedule1Recovered$70$0.1078cf642e…a572
10018FG-20248Oct 25Riverbend05Do not honorRetry schedule3Recovered$45$0.30797e2d6c…1333
10019FG-20249Jan 26Riverbend01Do not honorRetry schedule3Stopped—$0.305d343eb6…4ad4
10020FG-20250Feb 26Riverbend65Insufficient fundsRetry schedule1Recovered$45$0.108db9ee0d…631f
10021FG-20251Nov 25Riverbend54Expired cardDonor outreach0Stopped—$0.009b2867a1…b8ee
10022FG-20252Mar 26Riverbend51Insufficient fundsRetry schedule1Recovered$35$0.109e0585bb…80b9
10023FG-20253Dec 25Riverbend54Expired cardCard updater, then retry1Recovered$15$0.10f9a95242…5dd2
10024FG-20254Sep 26Riverbend65Insufficient fundsRetry schedule3Not recovered—$0.30518eec9d…29a0
10025FG-20255Mar 26Harbor LightR01ACH R01 fundsRetry schedule1Recovered$40$0.105f54347d…7fc3
10026FG-20256Sep 26Harbor LightR09ACH R01 fundsRetry schedule2Not recovered—$0.206d418bae…6ddb
10027FG-20257Feb 26Cedar Valley19Issuer unavailableRetry schedule3Not recovered—$0.30775bd426…3add
10028FG-20258Jun 26Cedar Valley02Do not honorRetry schedule4Recovered$15$0.4001568906…89da
10029FG-20259Apr 26Riverbend33Expired cardDonor outreach0Stopped—$0.0086413cde…a7fe
10030FG-20260Aug 26Riverbend05Do not honorRetry schedule2Recovered$60$0.2004094890…423e
10031FG-20261May 26Harbor Light51Insufficient fundsRetry schedule3Stopped—$0.3061a839b3…d8e5
10032FG-20262Mar 26Harbor Light51Insufficient fundsRetry schedule2Recovered$5$0.20dc787508…f1cc
10033FG-20263May 26Harbor Light54Expired cardCard updater, then retry1Recovered$5$0.10aa303900…4d99
10034FG-20264Nov 25Cedar Valley57Invalid cardDonor outreach1Recovered$30$0.10b07470d9…b98d
10035FG-20265Oct 25Northgate54Expired cardCard updater, then retry1Recovered$20$0.109f0f3842…302f
10036FG-20266Jul 26Northgate65Insufficient fundsRetry schedule4Recovered$20$0.40921dffb7…e13e
10037FG-20267Sep 26Northgate05Do not honorRetry schedule3Not recovered—$0.301c41909a…76a7
10038FG-20268May 26Riverbend54Expired cardDonor outreach1Recovered$10$0.10f8ffcf0f…9ec3
10039FG-20269Jul 26Riverbend51Insufficient fundsRetry schedule3Not recovered—$0.309962aad9…7f8f
10040FG-20270Sep 26Riverbend33Expired cardDonor outreach0Stopped—$0.000a1472e7…06d8
10041FG-20271Apr 26Harbor Light41Lost or stolenDonor outreach0Stopped—$0.0083bb000c…0a60
10042FG-20272Dec 25Riverbend54Expired cardCard updater, then retry1Recovered$30$0.1063a9780a…ea29
10043FG-20273Apr 26Harbor Light96Issuer unavailableRetry schedule1Recovered$70$0.10cd199a57…b64e
10044FG-20274Sep 26Cedar ValleyR02ACH R02 closedDonor outreach0Stopped—$0.0067598f87…3d2a
10045FG-20275Feb 26Harbor Light51Insufficient fundsRetry schedule2Recovered$20$0.2026671875…37fd
10046FG-20276Apr 26Harbor Light54Expired cardCard updater, then retry1Recovered$20$0.10b70b05a5…1b22
10047FG-20277May 26Harbor Light05Do not honorRetry schedule3Not recovered—$0.3072261978…3965
10048FG-20278Jun 26Harbor Light61Insufficient fundsRetry schedule2Not recovered—$0.2036671d5e…6baa
10049FG-20279Jun 26Cedar Valley96Issuer unavailableRetry schedule1Recovered$35$0.10a07a9176…258e
10050FG-20280Sep 26Cedar Valley54Expired cardCard updater, then retry1Recovered$35$0.10914c45ae…ab16

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.