Pith Number

pith:NNC5A2TI

pith:2010:NNC5A2TIMGEWPV5CCHZQ7E5ZCF

not attested not anchored not stored refs pending

HMC: Verifying Functional Programs Using Abstract Interpreters

Andrey Rybalchenko, Ranjit Jhala, Rupak Majumdar

arxiv:1004.2884 v2 · 2010-04-16 · cs.PL · 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{NNC5A2TIMGEWPV5CCHZQ7E5ZCF}

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	2026-05-18T04:32:19.387423Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b45d06a68618967d7a211f30f93b9117c66a2835a76430469a2196aefa76bd8

Aliases

arxiv: 1004.2884 · arxiv_version: 1004.2884v2 · doi: 10.48550/arxiv.1004.2884 · pith_short_12: NNC5A2TIMGEW · pith_short_16: NNC5A2TIMGEWPV5C · pith_short_8: NNC5A2TI

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/NNC5A2TIMGEWPV5CCHZQ7E5ZCF \
  | 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: 6b45d06a68618967d7a211f30f93b9117c66a2835a76430469a2196aefa76bd8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b5c01e334f32a189ea9443406975b49d274d1de989f3c2ba0660cba6ab26148",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2010-04-16T17:01:27Z",
    "title_canon_sha256": "4b53dac9cac767437de85ff880dd116281b12f84a4b88f1f0398e43e70114b85"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.2884",
    "kind": "arxiv",
    "version": 2
  }
}