Pith Number

pith:LEJNXHM6

pith:2020:LEJNXHM6HGCGNEJGS3DENWIDTR

not attested not anchored not stored refs pending

ChemGrapher: Optical Graph Recognition of Chemical Compounds by Deep Learning

Adam Arany, Jaak Simm, Martijn Oldenhof, Yves Moreau

arxiv:2002.09914 v1 · 2020-02-23 · stat.ML · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LEJNXHM6HGCGNEJGS3DENWIDTR}

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	2026-07-05T01:35:28.820597Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5912db9d9e398466912696c646d9039c58bb649c422c65d3f134208ffdf99a8b

Aliases

arxiv: 2002.09914 · arxiv_version: 2002.09914v1 · doi: 10.48550/arxiv.2002.09914 · pith_short_12: LEJNXHM6HGCG · pith_short_16: LEJNXHM6HGCGNEJG · pith_short_8: LEJNXHM6

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/LEJNXHM6HGCGNEJGS3DENWIDTR \
  | 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: 5912db9d9e398466912696c646d9039c58bb649c422c65d3f134208ffdf99a8b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9a92369cc85ee81afcbc73bd3f5fad482722ce27b9e49c2e4907d00121a5435",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2020-02-23T14:30:55Z",
    "title_canon_sha256": "b9fa27400fa2f2056844253072f8bd524937763c4f72ea644543bb53fa7ce8d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.09914",
    "kind": "arxiv",
    "version": 1
  }
}