Pith Number

pith:YMIIPRQU

pith:2015:YMIIPRQUYH254HCFHBAS4ETQXW

not attested not anchored not stored refs pending

Optimizing a Certified Proof Checker for a Large-Scale Computer-Generated Proof

Lu\'is Cruz-Filipe, Peter Schneider-Kamp

arxiv:1502.08008 v1 · 2015-02-27 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YMIIPRQUYH254HCFHBAS4ETQXW}

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.

Receipt and verification

First computed	2026-05-18T00:56:26.196669Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c31087c614c1f5de1c4538412e1270bd81d89ee08b84de02d745fed29e7008a9

Aliases

arxiv: 1502.08008 · arxiv_version: 1502.08008v1 · doi: 10.48550/arxiv.1502.08008 · pith_short_12: YMIIPRQUYH25 · pith_short_16: YMIIPRQUYH254HCF · pith_short_8: YMIIPRQU

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/YMIIPRQUYH254HCFHBAS4ETQXW \
  | 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: c31087c614c1f5de1c4538412e1270bd81d89ee08b84de02d745fed29e7008a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9cf33c1034fc45cdd972522e3ee1fc0097152d4d4187b575563fc12af0fdbe4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2015-02-27T18:55:16Z",
    "title_canon_sha256": "170dc2959120e3fbf53af3cf029ae3d0e66f87a9e09d57e2ada441d2720be351"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.08008",
    "kind": "arxiv",
    "version": 1
  }
}