Pith Number

pith:W2ZYNUEM

pith:2020:W2ZYNUEMX2UMW4MUMRPR5WTMBZ

not attested not anchored not stored refs pending

Overview of chemical ontologies

Christian Pachl, Jan Breitbart, Nils Frank, Stefan Br\"ase

arxiv:2002.03842 v1 · 2020-02-07 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W2ZYNUEMX2UMW4MUMRPR5WTMBZ}

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	2026-07-05T00:39:26.714236Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6b386d08cbea8cb7194645f1eda6c0e7a8cb19c769898400e0a3fa62b5ca05b

Aliases

arxiv: 2002.03842 · arxiv_version: 2002.03842v1 · doi: 10.48550/arxiv.2002.03842 · pith_short_12: W2ZYNUEMX2UM · pith_short_16: W2ZYNUEMX2UMW4MU · pith_short_8: W2ZYNUEM

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/W2ZYNUEMX2UMW4MUMRPR5WTMBZ \
  | 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: b6b386d08cbea8cb7194645f1eda6c0e7a8cb19c769898400e0a3fa62b5ca05b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f25638154c2dc2432e58473666b033288110d42123f3e35c2a0c195b8f11e09",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2020-02-07T10:42:22Z",
    "title_canon_sha256": "282d0c96561d9b5f2d250503de221e13422faa947a37bbcc18898da65a97d7e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.03842",
    "kind": "arxiv",
    "version": 1
  }
}