Pith Number

pith:WWAKGQTI

pith:2013:WWAKGQTIS3EFHFYPDCIWGHWUUT

not attested not anchored not stored refs pending

Why It's Nice to be Quoted: Quasiquoting for Prolog

Jan Wielemaker, Michael Hendricks

arxiv:1308.3941 v1 · 2013-08-19 · 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{WWAKGQTIS3EFHFYPDCIWGHWUUT}

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	2026-05-18T03:15:35.236563Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b580a3426896c853970f1891631ed4a4cc95917afa524314c3312bd874d69812

Aliases

arxiv: 1308.3941 · arxiv_version: 1308.3941v1 · doi: 10.48550/arxiv.1308.3941 · pith_short_12: WWAKGQTIS3EF · pith_short_16: WWAKGQTIS3EFHFYP · pith_short_8: WWAKGQTI

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/WWAKGQTIS3EFHFYPDCIWGHWUUT \
  | 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: b580a3426896c853970f1891631ed4a4cc95917afa524314c3312bd874d69812

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72f028e40cf4ba27241904320525d9a996f0249402e66ebc06a3862f82b08380",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2013-08-19T07:15:38Z",
    "title_canon_sha256": "5abf718b699e3ac494ac2c71513307be59f81e7c30c4050a82e67aeed9ef5892"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.3941",
    "kind": "arxiv",
    "version": 1
  }
}