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 4301 to 4350 of 35992
#GiftOrganisationDeclineActionAttemptsOutcomeRecoveredFeesHash
4301FG-14531Sep 26Harbor Light91Issuer unavailableRetry schedule1Recovered$15$0.1096a00050…8eb1
4302FG-14532Feb 26Northgate63Suspected fraudDonor outreach1Recovered$35$0.10b2a3ef80…c784
4303FG-14533Apr 26Northgate05Do not honorRetry schedule2Recovered$70$0.20579706c8…d8b1
4304FG-14534Aug 26Northgate62Account closedDonor outreach1Not recovered—$0.10dfd63a35…1480
4305FG-14535Sep 26Northgate61Insufficient fundsRetry schedule1Recovered$70$0.1088d7de9f…f55c
4306FG-14536Oct 25Harbor Light02Do not honorRetry schedule1Recovered$45$0.10bcf2fc68…231f
4307FG-14537Nov 25Harbor Light51Insufficient fundsRetry schedule1Recovered$45$0.108821150e…81ed
4308FG-14538Aug 26Harbor Light96Issuer unavailableRetry schedule1Recovered$45$0.10463a6fc2…9b88
4309FG-14539Sep 26Harbor Light54Expired cardCard updater, then retry2Recovered$45$0.2025776313…c346
4310FG-14540Nov 25Northgate41Lost or stolenDonor outreach1Recovered$45$0.1082b11e2a…6c47
4311FG-14541Jan 26Northgate54Expired cardDonor outreach0Stopped—$0.004e8ddedb…2a23
4312FG-14542May 26Northgate96Issuer unavailableRetry schedule1Recovered$45$0.10bd667524…b58e
4313FG-14543Jan 26Lumen Arts91Issuer unavailableRetry schedule1Recovered$5$0.100ea1cff9…4b7b
4314FG-14544Jul 26Lumen Arts51Insufficient fundsRetry schedule3Not recovered—$0.303551a0f7…d443
4315FG-14545Aug 26Lumen Arts54Expired cardCard updater, then retry1Recovered$40$0.10c3104ffc…ec8d
4316FG-14546Apr 26Riverbend54Expired cardDonor outreach0Stopped—$0.000094dd40…bade
4317FG-14547Jan 26Riverbend51Insufficient fundsRetry schedule2Stopped—$0.20ab568975…7d41
4318FG-14548Jul 26Riverbend51Insufficient fundsRetry schedule1Recovered$30$0.100a399564…c115
4319FG-14549Jun 26Harbor Light78Account closedDonor outreach0Stopped—$0.009f3da339…1c91
4320FG-14550Jan 26Northgate05Do not honorRetry schedule3Not recovered—$0.305e7e109f…9696
4321FG-14551May 26Northgate65Insufficient fundsRetry schedule1Recovered$130$0.10b5c12ac0…769c
4322FG-14552Jan 26Harbor Light05Do not honorRetry schedule4Recovered$15$0.402243dd17…2dc3
4323FG-14553Aug 26Harbor LightR02ACH R02 closedDonor outreach0Stopped—$0.000e84cee6…b2b8
4324FG-14554Oct 25Lumen Arts91Issuer unavailableRetry schedule1Recovered$25$0.105fd10a35…3d48
4325FG-14555Nov 25Lumen Arts41Lost or stolenDonor outreach0Stopped—$0.0036dca311…f92e
4326FG-14556Sep 26Lumen Arts19Issuer unavailableRetry schedule1Recovered$25$0.107ca744b9…0721
4327FG-14557Feb 26NorthgateR02ACH R02 closedDonor outreach1Recovered$25$0.1094fd6d99…8eef
4328FG-14558Apr 26Riverbend51Insufficient fundsRetry schedule3Recovered$20$0.303fc0527c…0dc5
4329FG-14559Jan 26Harbor Light41Lost or stolenCard updater, then retry1Recovered$35$0.105498dd89…6cf1
4330FG-14560Mar 26Cedar Valley62Account closedDonor outreach0Stopped—$0.00ecd9cdce…d602
4331FG-14561Dec 25NorthgateR01ACH R01 fundsRetry schedule3Recovered$60$0.3009bdd76f…1abb
4332FG-14562Feb 26NorthgateR01ACH R01 fundsRetry schedule2Not recovered—$0.203ceb9451…4e83
4333FG-14563Sep 26NorthgateR09ACH R01 fundsRetry schedule3Recovered$60$0.30d2081b11…b0d7
4334FG-14564Oct 25Riverbend51Insufficient fundsRetry schedule3Stopped—$0.303d722fc9…db1a
4335FG-14565Sep 26Harbor Light01Do not honorRetry schedule3Not recovered—$0.30e3cd0e44…1299
4336FG-14566May 26Riverbend54Expired cardCard updater, then retry1Recovered$10$0.108d79208a…f1c5
4337FG-14567Nov 25Northgate54Expired cardDonor outreach0Stopped—$0.007577cff6…932b
4338FG-14568Oct 25Harbor Light33Expired cardCard updater, then retry1Recovered$20$0.1002386a63…a31a
4339FG-14569Dec 25Harbor Light01Do not honorRetry schedule3Stopped—$0.30435818a0…c4cb
4340FG-14570Dec 25Harbor LightR01ACH R01 fundsRetry schedule1Recovered$100$0.10b227ee73…1154
4341FG-14571May 26Harbor Light33Expired cardCard updater, then retry1Recovered$45$0.1099901307…b7f2
4342FG-14572Nov 25Riverbend51Insufficient fundsRetry schedule1Recovered$90$0.10eeb81329…5064
4343FG-14573Jun 26Riverbend05Do not honorRetry schedule1Recovered$90$0.10f536b146…7cd3
4344FG-14574Sep 26Riverbend61Insufficient fundsRetry schedule1Recovered$90$0.10254c4c92…d431
4345FG-14575Nov 25Riverbend63Suspected fraudDonor outreach1Recovered$60$0.10efe45df6…7b34
4346FG-14576Jan 26Riverbend05Do not honorRetry schedule3Recovered$60$0.30f31e19b4…3dc9
4347FG-14577Jun 26Riverbend33Expired cardCard updater, then retry1Recovered$60$0.104d253dba…4766
4348FG-14578Jul 26Riverbend51Insufficient fundsRetry schedule2Stopped—$0.2016692083…a685
4349FG-14579Nov 25Lumen Arts33Expired cardCard updater, then retry1Recovered$60$0.10d5f2c945…ce42
4350FG-14580May 26Lumen Arts61Insufficient fundsRetry schedule1Recovered$60$0.10b876c4fa…24c4

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.