Pith Number

pith:VWW57ANG

pith:2013:VWW57ANGPGHOUJVVRRHRF2BZUB

not attested not anchored not stored refs pending

Implementing program extraction from CL1-proofs

Daming Zhu, Junfeng Luan, Ke Chen, Meixia Qu

arxiv:1311.6542 v1 · 2013-11-26 · 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{VWW57ANGPGHOUJVVRRHRF2BZUB}

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	2026-05-18T03:06:12.407722Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

adaddf81a6798eea26b58c4f12e839a075651cbe04f0be491ab72e3007beed0c

Aliases

arxiv: 1311.6542 · arxiv_version: 1311.6542v1 · doi: 10.48550/arxiv.1311.6542 · pith_short_12: VWW57ANGPGHO · pith_short_16: VWW57ANGPGHOUJVV · pith_short_8: VWW57ANG

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/VWW57ANGPGHOUJVVRRHRF2BZUB \
  | 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: adaddf81a6798eea26b58c4f12e839a075651cbe04f0be491ab72e3007beed0c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7e2fca9a7e33ae0a4ea8e0ebdbb0a5fadb8d4a7dbc9cbe8a247349d18f690fa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2013-11-26T02:09:41Z",
    "title_canon_sha256": "7a459701fa3dc8c5c58f1aeaaf44e7316ce3f55489b50f307f191d2df57a212b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.6542",
    "kind": "arxiv",
    "version": 1
  }
}