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 19101 to 19150 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
19101FG-29331May 26Harbor Light33Expired cardCard updater, then retry1Recovered$20$0.10a35900f3…32e1
19102FG-29332Oct 25Riverbend54Expired cardCard updater, then retry1Recovered$15$0.108e295406…247e
19103FG-29333Dec 25Riverbend54Expired cardCard updater, then retry1Recovered$15$0.104935959c…d4af
19104FG-29334Feb 26Riverbend05Do not honorRetry schedule2Recovered$15$0.20a9a10773…0710
19105FG-29335Mar 26Riverbend02Do not honorRetry schedule1Recovered$15$0.10daf32e83…25cf
19106FG-29336Aug 26NorthgateR01ACH R01 fundsRetry schedule2Not recovered—$0.20995cef0c…860f
19107FG-29337May 26Riverbend65Insufficient fundsRetry schedule2Recovered$15$0.20b59e4790…c0c6
19108FG-29338Jun 26Cedar ValleyR03ACH R03 no acctDonor outreach0Stopped—$0.00b5d11e8c…42a8
19109FG-29339Sep 26Cedar ValleyR01ACH R01 fundsRetry schedule2Stopped—$0.206129b47d…07d6
19110FG-29340Oct 25Northgate91Issuer unavailableRetry schedule1Recovered$40$0.1037e77b35…5f8a
19111FG-29341Feb 26Northgate02Do not honorRetry schedule3Stopped—$0.3094e9889c…cdc5
19112FG-29342May 26Northgate54Expired cardCard updater, then retry1Recovered$40$0.1044def9bf…a4ed
19113FG-29343Oct 25Harbor Light33Expired cardDonor outreach0Stopped—$0.00e1f8bbb3…d05d
19114FG-29344Dec 25Harbor Light02Do not honorRetry schedule3Not recovered—$0.30cbdd94f5…9ae8
19115FG-29345Oct 25Riverbend02Do not honorRetry schedule3Not recovered—$0.30e3c15866…f144
19116FG-29346Jun 26Riverbend51Insufficient fundsRetry schedule1Recovered$40$0.10f5113829…8030
19117FG-29347Mar 26NorthgateR09ACH R01 fundsRetry schedule2Stopped—$0.20e3fef5ae…2742
19118FG-29348Apr 26Harbor Light51Insufficient fundsRetry schedule3Stopped—$0.30b18bcc86…8375
19119FG-29349Apr 26Riverbend05Do not honorRetry schedule3Not recovered—$0.30b9a1ea16…2a6d
19120FG-29350Jul 26Riverbend05Do not honorRetry schedule3Stopped—$0.30a18463e5…6101
19121FG-29351Sep 26Riverbend02Do not honorRetry schedule3Recovered$15$0.30c63e636b…4c13
19122FG-29352Dec 25Riverbend59Suspected fraudDonor outreach0Stopped—$0.0086c94e44…0aca
19123FG-29353Sep 26Riverbend46Account closedDonor outreach1Not recovered—$0.104737658b…d3a9
19124FG-29354Jun 26Northgate01Do not honorRetry schedule3Stopped—$0.30431ff54e…44c2
19125FG-29355Feb 26NorthgateR01ACH R01 fundsRetry schedule2Stopped—$0.20f1becccd…0c94
19126FG-29356Jan 26Harbor Light65Insufficient fundsRetry schedule2Recovered$120$0.20e63d52fb…348d
19127FG-29357Jan 26Lumen Arts41Lost or stolenDonor outreach0Stopped—$0.00d3878633…5ba7
19128FG-29358Apr 26Lumen Arts61Insufficient fundsRetry schedule1Recovered$25$0.10f1a33a7a…3d26
19129FG-29359Apr 26Cedar Valley02Do not honorRetry schedule2Recovered$10$0.20e6dd042a…cb12
19130FG-29360Jan 26Northgate41Lost or stolenDonor outreach0Stopped—$0.009d2154e0…03ed
19131FG-29361Feb 26Northgate05Do not honorRetry schedule2Recovered$100$0.20831773fa…ad5f
19132FG-29362Apr 26Northgate51Insufficient fundsRetry schedule3Recovered$100$0.303f45cd48…714f
19133FG-29363Jul 26Northgate05Do not honorRetry schedule3Not recovered—$0.308a2ab424…9328
19134FG-29364Aug 26Northgate91Issuer unavailableRetry schedule1Recovered$100$0.105b312dfe…a1cd
19135FG-29365Jun 26Lumen Arts61Insufficient fundsRetry schedule1Recovered$60$0.10dcff1c51…41d1
19136FG-29366Mar 26Harbor Light63Suspected fraudDonor outreach0Not recovered—$0.00234fd558…04fc
19137FG-29367Jul 26Harbor Light51Insufficient fundsRetry schedule3Stopped—$0.3081575b10…9d51
19138FG-29368Feb 26Cedar Valley61Insufficient fundsRetry schedule3Not recovered—$0.3008c4de8c…7388
19139FG-29369May 26Northgate65Insufficient fundsRetry schedule3Not recovered—$0.30c34120c6…2a13
19140FG-29370Jun 26Riverbend51Insufficient fundsRetry schedule1Recovered$45$0.1099ab956b…66db
19141FG-29371Jun 26NorthgateR02ACH R02 closedDonor outreach0Stopped—$0.00f21c5a55…a767
19142FG-29372Apr 26Lumen Arts54Expired cardCard updater, then retry1Recovered$40$0.10524147d9…ad6c
19143FG-29373Jun 26Lumen Arts65Insufficient fundsRetry schedule1Not recovered—$0.10a08683e3…c99f
19144FG-29374Nov 25Riverbend51Insufficient fundsRetry schedule3Not recovered—$0.308fd8945d…cdb8
19145FG-29375Jan 26Riverbend61Insufficient fundsRetry schedule1Recovered$10$0.1040f60057…49d7
19146FG-29376Apr 26Harbor Light61Insufficient fundsRetry schedule1Recovered$15$0.10a89e2029…39a9
19147FG-29377Sep 26Lumen ArtsR01ACH R01 fundsRetry schedule1Recovered$25$0.10217f2a94…507a
19148FG-29378Dec 25Northgate51Insufficient fundsRetry schedule1Recovered$30$0.10170016ff…500b
19149FG-29379Apr 26Northgate57Invalid cardDonor outreach0Stopped—$0.00dbae0454…0b43
19150FG-29380May 26Northgate61Insufficient fundsRetry schedule1Recovered$30$0.106417a5f8…75e3

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.