What depends on it
Ask what a key signed (since a time), what depends on an agent version, or where an erratum's correction reaches. Each answer is a receipt pinned to a signed checkpoint, the same one GET /v1/model/impact returns.
$ curl -H 'Accept: application/json' https://aisourceoftruth.com/impact?key=promptreports-ai%231&as_of=24 # this page is a rendering of the API. Reproduce it as data.
ASK
As of checkpoint 24, anchored 2026-11-11T13:10:53Z (event rows up to that time count). This is the state at that checkpoint, not now. Show the latest.
AS OF A SIGNED CHECKPOINT
Pick a checkpoint to see the state the world model gives for it. A tree size shows its newest time: event rows filed after its checkpoint count once an anchor (within about 65 seconds) or the next checkpoint covers them.
STATE AT THE CHECKPOINT
key:promptreports-ai#1 ACTIVE
publisherpromptreports-ai
version1
algorithmEd25519
active from2026-11-09T19:24:06Z
sinceevery record the key signed
SIGNED BY THIS KEY · 24
Records it signed
DOWNSTREAM · 0
Records built from them
None.
ASSETS · 24
36cc3d218e8fe067…f3dc182ae016a8ec…13d9f848a8a66773…2103124b2e15eb04…5c91668270236254…56f526641ab171ad…6fd0546de419356b…ca540e9cd25bec2d…9653195891a6b06a…a9c8cc52f4fe72e7…f409deb0fbcb0d91…721d7a93e52a8a44…e0d7ffd30d987f69…7bff8fd9667ddc69…2f19183f0bdf147b…7b6868c9ebc2a916…cccb63cfcfd1ec49…8a7fa956f25f6f6e…e8e672ece423d2c1…495b7b2051f355f8…7130eab6869b99dc…b805a0f9af140abb…c07eb024d1b178cf…e17553c8072181a7…
RECEIPT · aisot-impact-receipt-v1
checkpointsize 24 · signed 2026-11-11T13:10:53Z
relied on24 record(s), 1 event row(s)
truncatedno
receipt sha-256
ef85959f0f652d3f8e9a744c67d09cebd6aa8c2da2bdfdd70395596329f071f0