Pith Number

pith:ZCYB3UPR

pith:2024:ZCYB3UPR7X2WDXRF2TYAGVEVIU

not attested not anchored not stored refs pending

Lean4Lean: Verifying a Typechecker for Lean, in Lean

Mario Carneiro

arxiv:2403.14064 v3 · 2024-03-21 · cs.PL

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZCYB3UPR7X2WDXRF2TYAGVEVIU}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

2 papers in Pith

Proof-Carrying Certificates for LLM Pipelines: A Trust-Boundary Architecture

Formally Verified Patent Analysis via Dependent Type Theory: Machine-Checkable Certificates from a Hybrid AI + Lean 4 Pipeline

Receipt and verification

First computed	2026-07-05T12:11:12.596780Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c8b01dd1f1fdf561de25d4f00354954512f32ebfe8ca982e81f051c13574bfcc

Aliases

arxiv: 2403.14064 · arxiv_version: 2403.14064v3 · doi: 10.48550/arxiv.2403.14064 · pith_short_12: ZCYB3UPR7X2W · pith_short_16: ZCYB3UPR7X2WDXRF · pith_short_8: ZCYB3UPR

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/ZCYB3UPR7X2WDXRF2TYAGVEVIU \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: c8b01dd1f1fdf561de25d4f00354954512f32ebfe8ca982e81f051c13574bfcc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac209401f43beaeac1e4156e31b8e2024275a18d7d46a41c510408da89739405",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2024-03-21T01:22:52Z",
    "title_canon_sha256": "e01811b4d23c4cccd38bedb22522878a567d6bdf2b18e3dfc02018ccdc2bdcb5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2403.14064",
    "kind": "arxiv",
    "version": 3
  }
}