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 6251 to 6300 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
6251FG-16481May 26Cedar ValleyR09ACH R01 fundsRetry schedule1Recovered$35$0.106f2a6c40…c53c
6252FG-16482Oct 25Cedar Valley61Insufficient fundsRetry schedule1Recovered$10$0.1064a040d1…d58b
6253FG-16483Nov 25Cedar Valley02Do not honorRetry schedule3Stopped—$0.30bbae3cd5…d39d
6254FG-16484Aug 26Cedar Valley91Issuer unavailableRetry schedule2Recovered$10$0.20e0a00618…a085
6255FG-16485Apr 26Northgate91Issuer unavailableRetry schedule2Recovered$80$0.2004932a51…9cdc
6256FG-16486Jul 26Northgate19Issuer unavailableRetry schedule1Recovered$80$0.101c4bef57…fde4
6257FG-16487Mar 26Northgate63Suspected fraudDonor outreach1Not recovered—$0.10e1643fe5…9856
6258FG-16488Apr 26Northgate62Account closedDonor outreach0Stopped—$0.00937e1022…a19e
6259FG-16489Sep 26Northgate54Expired cardDonor outreach1Recovered$15$0.10931645cf…587f
6260FG-16490Nov 25Harbor Light51Insufficient fundsRetry schedule3Stopped—$0.30d49e97bd…cca3
6261FG-16491Feb 26Harbor Light91Issuer unavailableRetry schedule1Recovered$10$0.10a0727114…a0c7
6262FG-16492Apr 26Harbor Light54Expired cardDonor outreach0Stopped—$0.0007d94edc…767d
6263FG-16493Jul 26Harbor Light61Insufficient fundsRetry schedule4Recovered$10$0.40c2f727d0…79d2
6264FG-16494Sep 26Harbor Light54Expired cardDonor outreach1Recovered$10$0.108ba527ca…eb1b
6265FG-16495Apr 26Lumen Arts14Invalid cardDonor outreach1Not recovered—$0.1055017bef…a548
6266FG-16496Jan 26Harbor Light61Insufficient fundsRetry schedule3Stopped—$0.305bc24af8…9543
6267FG-16497Aug 26Harbor Light41Lost or stolenCard updater, then retry1Recovered$15$0.10e60e88a4…c111
6268FG-16498Dec 25Lumen Arts41Lost or stolenCard updater, then retry1Not recovered—$0.10895cec63…4d97
6269FG-16499Oct 25Riverbend51Insufficient fundsRetry schedule1Recovered$40$0.104bfdb6d8…ada9
6270FG-16500Jul 26Riverbend54Expired cardDonor outreach0Stopped—$0.00af7c029a…1e2f
6271FG-16501Jan 26Cedar Valley62Account closedDonor outreach0Stopped—$0.00594ffb5e…13d9
6272FG-16502Jul 26NorthgateR02ACH R02 closedDonor outreach0Stopped—$0.00c934be27…4b74
6273FG-16503Mar 26Cedar Valley05Do not honorRetry schedule1Recovered$5$0.10f3c62ad0…3f76
6274FG-16504May 26Cedar Valley05Do not honorRetry schedule4Recovered$5$0.402175ad1b…0bde
6275FG-16505Dec 25Northgate41Lost or stolenDonor outreach0Stopped—$0.001a681810…b9cb
6276FG-16506Jun 26NorthgateR02ACH R02 closedDonor outreach0Stopped—$0.00148592c6…7560
6277FG-16507May 26Northgate05Do not honorRetry schedule3Not recovered—$0.30a9e950fd…daa8
6278FG-16508Sep 26Riverbend15Invalid cardDonor outreach0Stopped—$0.0075e27edd…0797
6279FG-16509Oct 25Harbor Light63Suspected fraudDonor outreach0Not recovered—$0.00dba2814a…1f13
6280FG-16510Jun 26Harbor Light51Insufficient fundsRetry schedule1Recovered$35$0.102eae6e66…1725
6281FG-16511Mar 26Cedar Valley54Expired cardCard updater, then retry1Recovered$15$0.10b241d7ae…8b82
6282FG-16512Jul 26Lumen Arts05Do not honorRetry schedule3Stopped—$0.30866f1908…9935
6283FG-16513Jul 26Riverbend54Expired cardCard updater, then retry1Not recovered—$0.10cce348bf…2f0b
6284FG-16514Nov 25Harbor Light65Insufficient fundsRetry schedule3Recovered$20$0.30589aa7fc…a02a
6285FG-16515Jul 26Harbor Light19Issuer unavailableRetry schedule2Recovered$20$0.209d126414…5342
6286FG-16516May 26Harbor Light33Expired cardCard updater, then retry1Recovered$80$0.1082abe450…73d8
6287FG-16517Jul 26Harbor Light54Expired cardCard updater, then retry1Recovered$80$0.10cc85833b…e59b
6288FG-16518Oct 25Lumen Arts19Issuer unavailableRetry schedule1Recovered$110$0.108af961d2…7b6b
6289FG-16519Nov 25Lumen Arts54Expired cardCard updater, then retry1Recovered$110$0.10e7254381…2417
6290FG-16520Mar 26Lumen Arts96Issuer unavailableRetry schedule1Recovered$110$0.10e6ddc09a…7a66
6291FG-16521Mar 26Lumen ArtsR01ACH R01 fundsRetry schedule2Not recovered—$0.20a33ed544…2a93
6292FG-16522Jun 26Northgate01Do not honorRetry schedule1Recovered$20$0.1019a7a0b6…739a
6293FG-16523Nov 25Riverbend33Expired cardCard updater, then retry1Not recovered—$0.1073175cfd…3029
6294FG-16524May 26NorthgateR02ACH R02 closedDonor outreach0Stopped—$0.00fe622bbf…bb5f
6295FG-16525Dec 25Lumen Arts01Do not honorRetry schedule1Recovered$15$0.1091a8f5c9…a2ae
6296FG-16526Apr 26Lumen Arts65Insufficient fundsRetry schedule1Recovered$15$0.10ece302df…0176
6297FG-16527May 26Cedar Valley51Insufficient fundsRetry schedule2Recovered$25$0.20eb1bb8e8…35a5
6298FG-16528Aug 26Cedar Valley05Do not honorRetry schedule3Not recovered—$0.30f32bcbf0…214d
6299FG-16529Sep 26Cedar Valley19Issuer unavailableRetry schedule1Recovered$25$0.103d38d46e…e0fd
6300FG-16530Mar 26Cedar ValleyR01ACH R01 fundsRetry schedule1Recovered$45$0.108fa48e55…674e

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.