Pith Number

pith:EWV2UZA6

pith:2018:EWV2UZA6KNHAC4AQKHWJWVK3N2

not attested not anchored not stored refs pending

Learning Hyperedge Replacement Grammars for Graph Generation

David Chiang, Salvador Aguinaga, Tim Weninger

arxiv:1802.08068 v2 · 2018-02-21 · cs.SI · cs.FL

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EWV2UZA6KNHAC4AQKHWJWVK3N2}

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	2026-05-18T00:22:44.092721Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25abaa641e534e01701051ec9b555b6e8e61173f1de830e108ebd8ad0869b9ee

Aliases

arxiv: 1802.08068 · arxiv_version: 1802.08068v2 · doi: 10.48550/arxiv.1802.08068 · pith_short_12: EWV2UZA6KNHA · pith_short_16: EWV2UZA6KNHAC4AQ · pith_short_8: EWV2UZA6

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/EWV2UZA6KNHAC4AQKHWJWVK3N2 \
  | 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: 25abaa641e534e01701051ec9b555b6e8e61173f1de830e108ebd8ad0869b9ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f48e4404ef9c0369927f784a5251fcc02afd0459430d6566703295ec8a5b17af",
    "cross_cats_sorted": [
      "cs.FL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2018-02-21T01:32:10Z",
    "title_canon_sha256": "3475b8a2f40c487bb8b745683a03849717d33ba39e72ad6c3f7aabb077349b05"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.08068",
    "kind": "arxiv",
    "version": 2
  }
}