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 21351 to 21400 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
21351FG-31581May 26Lumen Arts33Expired cardDonor outreach0Stopped—$0.0042b9c407…761a
21352FG-31582Aug 26Lumen Arts33Expired cardCard updater, then retry1Not recovered—$0.10425acec0…112e
21353FG-31583Nov 25Harbor Light54Expired cardCard updater, then retry1Recovered$20$0.103cf0b8d8…cc5c
21354FG-31584Aug 26Harbor Light91Issuer unavailableRetry schedule1Recovered$20$0.1098123442…a901
21355FG-31585Nov 25Northgate51Insufficient fundsRetry schedule3Recovered$80$0.30aacdf2c0…9fbb
21356FG-31586Jun 26Lumen Arts02Do not honorRetry schedule3Not recovered—$0.30d55a191f…991c
21357FG-31587Jan 26Cedar Valley61Insufficient fundsRetry schedule1Recovered$15$0.10b9ec2d78…143e
21358FG-31588Sep 26Cedar Valley02Do not honorRetry schedule1Recovered$15$0.100f764317…bb4d
21359FG-31589Dec 25Harbor Light61Insufficient fundsRetry schedule1Recovered$35$0.10b3fa1b9e…fc4f
21360FG-31590Aug 26Harbor Light05Do not honorRetry schedule3Stopped—$0.306ec84e2f…bb55
21361FG-31591Nov 25RiverbendR02ACH R02 closedDonor outreach0Stopped—$0.004bc13b8e…2740
21362FG-31592Jan 26RiverbendR09ACH R01 fundsRetry schedule3Recovered$30$0.30a6a5abc4…0b2b
21363FG-31593Jul 26RiverbendR01ACH R01 fundsRetry schedule1Recovered$30$0.101b27a797…b907
21364FG-31594May 26Riverbend54Expired cardCard updater, then retry1Recovered$50$0.10e976d59f…8c0c
21365FG-31595Dec 25Riverbend05Do not honorRetry schedule1Recovered$20$0.10a4781780…7847
21366FG-31596Jan 26Harbor Light91Issuer unavailableRetry schedule1Recovered$10$0.10c831a176…3bba
21367FG-31597Jul 26Harbor Light05Do not honorRetry schedule2Recovered$10$0.2081cbb184…0328
21368FG-31598Feb 26Harbor LightR01ACH R01 fundsRetry schedule2Recovered$90$0.206e0c4c8b…2514
21369FG-31599Jan 26Northgate54Expired cardCard updater, then retry1Not recovered—$0.1070cf1403…40bb
21370FG-31600Jul 26Northgate33Expired cardCard updater, then retry1Recovered$50$0.10e534d0b0…f9a0
21371FG-31601Jul 26Cedar Valley91Issuer unavailableRetry schedule1Recovered$50$0.102201d398…7680
21372FG-31602Apr 26Northgate51Insufficient fundsRetry schedule1Recovered$35$0.1070a0d1ad…42bc
21373FG-31603Nov 25Riverbend05Do not honorRetry schedule3Recovered$35$0.300c9c0b0c…e248
21374FG-31604Sep 26Riverbend51Insufficient fundsRetry schedule1Recovered$35$0.10a035e40e…1d42
21375FG-31605Dec 25Harbor Light05Do not honorRetry schedule3Recovered$25$0.30858f6fb7…fa0e
21376FG-31606Mar 26Harbor Light54Expired cardCard updater, then retry1Recovered$25$0.10258f3511…a75a
21377FG-31607Apr 26Riverbend61Insufficient fundsRetry schedule3Stopped—$0.30d0cf4bcb…1e0f
21378FG-31608May 26Harbor Light61Insufficient fundsRetry schedule1Recovered$45$0.103b43392e…92eb
21379FG-31609Jun 26Harbor Light43Lost or stolenDonor outreach0Stopped—$0.00279fda00…dfe6
21380FG-31610Jul 26Harbor Light62Account closedDonor outreach0Stopped—$0.001c1c4c84…9683
21381FG-31611Nov 25Northgate54Expired cardCard updater, then retry1Recovered$140$0.1089a29766…c404
21382FG-31612Dec 25NorthgateR02ACH R02 closedDonor outreach0Stopped—$0.00c55573bb…b7d5
21383FG-31613Jul 26NorthgateR03ACH R03 no acctDonor outreach1Recovered$25$0.101c19a21e…39dc
21384FG-31614Mar 26Northgate62Account closedDonor outreach0Stopped—$0.00b99383db…c482
21385FG-31615Oct 25Cedar Valley54Expired cardCard updater, then retry1Recovered$10$0.10be0e5774…b596
21386FG-31616Jun 26Cedar Valley65Insufficient fundsRetry schedule4Recovered$10$0.408b6b58ad…0084
21387FG-31617Oct 25Harbor Light51Insufficient fundsRetry schedule2Recovered$15$0.20d80beafe…1dd3
21388FG-31618Aug 26Harbor Light59Suspected fraudDonor outreach0Stopped—$0.005649185b…9189
21389FG-31619Feb 26Harbor Light61Insufficient fundsRetry schedule3Recovered$70$0.309df7b11a…43d1
21390FG-31620Sep 26Harbor Light54Expired cardCard updater, then retry1Recovered$70$0.1083c5222b…9fce
21391FG-31621Aug 26Harbor Light61Insufficient fundsRetry schedule1Recovered$110$0.1055c376b6…46e9
21392FG-31622Oct 25Northgate51Insufficient fundsRetry schedule1Recovered$20$0.1074fd7c9b…93da
21393FG-31623May 26Northgate41Lost or stolenCard updater, then retry1Recovered$20$0.101c8fb473…2992
21394FG-31624Sep 26Northgate41Lost or stolenDonor outreach0Stopped—$0.0063249712…66c3
21395FG-31625Jul 26Harbor Light61Insufficient fundsRetry schedule1Recovered$10$0.104ad7ef50…7cd0
21396FG-31626Jan 26Northgate51Insufficient fundsRetry schedule3Not recovered—$0.30fde42fce…eedc
21397FG-31627Feb 26Northgate19Issuer unavailableRetry schedule1Recovered$200$0.10cd758898…90d2
21398FG-31628Apr 26Northgate54Expired cardCard updater, then retry1Recovered$200$0.10f1a04909…d6fa
21399FG-31629Jul 26Northgate51Insufficient fundsRetry schedule3Not recovered—$0.307ef263e1…82c6
21400FG-31630May 26Harbor Light51Insufficient fundsRetry schedule1Recovered$20$0.103a53f2b0…ed39

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.