Pith Number

pith:WPQ4YSHF

pith:2018:WPQ4YSHF324IQUNWH54PF6RTUC

not attested not anchored not stored refs pending

Top-down and Bottom-up Evaluation Procedurally Integrated

David S. Warren

arxiv:1804.08443 v1 · 2018-04-23 · 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{WPQ4YSHF324IQUNWH54PF6RTUC}

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	2026-05-18T00:17:48.334421Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3e1cc48e5deb88851b63f78f2fa33a0a1b953a792cddc0f32c1b6fa44b77e5b

Aliases

arxiv: 1804.08443 · arxiv_version: 1804.08443v1 · doi: 10.48550/arxiv.1804.08443 · pith_short_12: WPQ4YSHF324I · pith_short_16: WPQ4YSHF324IQUNW · pith_short_8: WPQ4YSHF

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/WPQ4YSHF324IQUNWH54PF6RTUC \
  | 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: b3e1cc48e5deb88851b63f78f2fa33a0a1b953a792cddc0f32c1b6fa44b77e5b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c80497f8193c7dea89ebbf6896efd5a9c3a56ae56faebee130d423eb3809eec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2018-04-23T14:00:41Z",
    "title_canon_sha256": "3cb3f6dc22bbaffe82d50da447470158e4322d7e428516a37c34f3b455e547b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.08443",
    "kind": "arxiv",
    "version": 1
  }
}