Receipts

Four shapes of receipt.

A receipt is more honest than a benchmark. We print four kinds.

01 · The joule receipt

Every call returns its joules.

A metered call doesn’t return a value. It returns a value and what it cost. You know what your pipeline costs before you ship it to a battery-powered drone.

Math-Ground AI · receipt
step 207 / 400
  • RSS safety envelope 37.2 pJ
  • DAM-VLA route 6.2 µs · 4.1 pJ
  • CAD transition (closed) 1.8 ns · 0.2 pJ
  • Diffusion step 11.4 µs · 8.7 pJ
  • Verifier (e-value · accept) 0.8 µs · 0.6 pJ
  • Per-step total 219.7 pJ
total · 400 steps 87.9 J
epistemic_mode from_retrieval
retrieved_at 2026-05-23T14:02:11Z
source example.org/page
valid_time 2026-05-23
scope particular
certainty 0.94
authority_tier 1

02 · The epistemic receipt

Every claim labels its source.

A confident answer about what was true at training cutoff is a different object than a confident answer about what is true now. The substrate enforces the distinction.

03 · The evidence receipt

Verification earns its stop.

Evidence accumulates as an e-value. Stop when the bound is crossed. Easy claims halt in one step. Hard claims get the full check. The verifier never runs more compute than the evidence justifies.

e-value claim_07
type-I error bound ≤ 0.05 Ville · 1939
dam-router compact · s7
checkpoint15.7 MB
provenancesidecar
data sourceoracle replay
seed7
cmp run A vs B byte-identical

04 · The routing receipt

Checkpoints that are byte-reproducible.

The router teacher is the cascade replayed as an oracle. No external model. No field-trace collection. Two independent runs with the same seed produce the same file, byte for byte.

The worked proof

Three solvers. One puzzle. Cryptographic hashes confirm they agree.

The sudoku exhibit runs this end-to-end — constraint-propagating CSP, brute force, and Z3, each emitting a typed receipt with wall time, ops counted, and joules spent.