Pith Number

pith:U2EJ6CWR

pith:2005:U2EJ6CWRJABUYMPTLASEIWJESJ

not attested not anchored not stored refs pending

A three-valued semantics for logic programmers

Lee Naish

arxiv:cs/0508004 v1 · 2005-08-01 · 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{U2EJ6CWRJABUYMPTLASEIWJESJ}

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	2026-05-18T02:37:36.927913Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6889f0ad148034c31f35824445924925eafe8a2d7b695eacebeda6583be1e24

Aliases

arxiv: cs/0508004 · arxiv_version: cs/0508004v1 · doi: 10.48550/arxiv.cs/0508004 · pith_short_12: U2EJ6CWRJABU · pith_short_16: U2EJ6CWRJABUYMPT · pith_short_8: U2EJ6CWR

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/U2EJ6CWRJABUYMPTLASEIWJESJ \
  | 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: a6889f0ad148034c31f35824445924925eafe8a2d7b695eacebeda6583be1e24

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a610860b5ff6dede89f6c192fa3b4e66eb0f44eb923df4bf35318af547fee91c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cs.LO",
    "submitted_at": "2005-08-01T05:23:44Z",
    "title_canon_sha256": "0e9c86156561ed1d6a169094b3d0b14f603eb06bc1d0a270b2050d71bd87844a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0508004",
    "kind": "arxiv",
    "version": 1
  }
}