Pith Number

pith:DDXSW2Z2

pith:2016:DDXSW2Z2VHVLQKZ44SUIGY743U

not attested not anchored not stored refs pending

A New Method of Verification of Functional Programs

Andrew M. Mironov

arxiv:1604.04240 v1 · 2016-04-14 · 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{DDXSW2Z2VHVLQKZ44SUIGY743U}

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	2026-05-18T01:17:06.085885Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18ef2b6b3aa9eab82b3ce4a88363fcdd35537d60defb2926b1967f291dd81745

Aliases

arxiv: 1604.04240 · arxiv_version: 1604.04240v1 · doi: 10.48550/arxiv.1604.04240 · pith_short_12: DDXSW2Z2VHVL · pith_short_16: DDXSW2Z2VHVLQKZ4 · pith_short_8: DDXSW2Z2

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/DDXSW2Z2VHVLQKZ44SUIGY743U \
  | 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: 18ef2b6b3aa9eab82b3ce4a88363fcdd35537d60defb2926b1967f291dd81745

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf301687003ff61bb621deede2d8fda2073f80b8cac70e43b3337c1a56f3e904",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2016-04-14T18:01:57Z",
    "title_canon_sha256": "6aa248904372d5bc37672ef02eca2a793b548a1da43dd586a2f39d7e2fa9c6b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.04240",
    "kind": "arxiv",
    "version": 1
  }
}