Pith Number

pith:4Z22FAVR

pith:2013:4Z22FAVRBI2ZM3ZPXLX5ROE6BE

not attested not anchored not stored refs pending

OESPA:A Theory of Programming that Support Software Engineering

Sen Ma

arxiv:1304.0538 v1 · 2013-04-02 · 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{4Z22FAVRBI2ZM3ZPXLX5ROE6BE}

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	2026-05-18T03:29:15.113742Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e675a282b10a35966f2fbaefd8b89e0927c6265273abea2cbeabc822fc3bc04e

Aliases

arxiv: 1304.0538 · arxiv_version: 1304.0538v1 · doi: 10.48550/arxiv.1304.0538 · pith_short_12: 4Z22FAVRBI2Z · pith_short_16: 4Z22FAVRBI2ZM3ZP · pith_short_8: 4Z22FAVR

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/4Z22FAVRBI2ZM3ZPXLX5ROE6BE \
  | 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: e675a282b10a35966f2fbaefd8b89e0927c6265273abea2cbeabc822fc3bc04e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d910862b22b041a5c143781c50000f6bc2cd8c57a344cd40c9119db82bc9606a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2013-04-02T05:57:44Z",
    "title_canon_sha256": "2173e951b0c089b4d000dd19f1a278c5accd14ec14c2feda2b5dc22169142b1b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.0538",
    "kind": "arxiv",
    "version": 1
  }
}