Pith Number

pith:F7PEFQCJ

pith:2019:F7PEFQCJXXT37EXIZ4W5LNLJ2K

not attested not anchored not stored refs pending

A Universal Density Matrix Functional from Molecular Orbital-Based Machine Learning: Transferability across Organic Molecules

Anders S. Christensen, Lixue Cheng, Matthew Welborn, Thomas F. Miller III

arxiv:1901.03309 v3 · 2019-01-10 · physics.chem-ph · 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{F7PEFQCJXXT37EXIZ4W5LNLJ2K}

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	2026-05-17T23:48:30.974816Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2fde42c049bde7bf92e8cf2dd5b569d2956fcba85caa62e0d1ae50579df5b0d5

Aliases

arxiv: 1901.03309 · arxiv_version: 1901.03309v3 · doi: 10.48550/arxiv.1901.03309 · pith_short_12: F7PEFQCJXXT3 · pith_short_16: F7PEFQCJXXT37EXI · pith_short_8: F7PEFQCJ

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/F7PEFQCJXXT37EXIZ4W5LNLJ2K \
  | 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: 2fde42c049bde7bf92e8cf2dd5b569d2956fcba85caa62e0d1ae50579df5b0d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a7314cf8f004adcfb1b40409731c0c3d47182750622a929dc34154a909a1818",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2019-01-10T18:26:45Z",
    "title_canon_sha256": "7e0ddd5737b3f582f425630bde5e9fa941887d1f1fea78ad0c3e704eb3a6a5ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.03309",
    "kind": "arxiv",
    "version": 3
  }
}