Pith Number

pith:PQBKICDF

pith:2018:PQBKICDFE47AL4YCVJ2K5PC4ZM

not attested not anchored not stored refs pending

Diagnostics of Data-Driven Models: Uncertainty Quantification of PM7 Semi-Empirical Quantum Chemical Method

Andrew Packard, Arun Hegde, Dmitry Zubarev, James Oreluk, Michael Frenklach, Wenyu Li, Zhenyuan Liu

arxiv:1806.04813 v2 · 2018-06-13 · physics.chem-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PQBKICDFE47AL4YCVJ2K5PC4ZM}

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	2026-05-18T00:05:45.350074Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c02a40865273e05f302aa74aebc5ccb1070c188a30c7dd9d908da05b7b163f2

Aliases

arxiv: 1806.04813 · arxiv_version: 1806.04813v2 · doi: 10.48550/arxiv.1806.04813 · pith_short_12: PQBKICDFE47A · pith_short_16: PQBKICDFE47AL4YC · pith_short_8: PQBKICDF

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/PQBKICDFE47AL4YCVJ2K5PC4ZM \
  | 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: 7c02a40865273e05f302aa74aebc5ccb1070c188a30c7dd9d908da05b7b163f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2555c82085e673e9d53e7ce9df8f56835670d43cd986f3d0639209cc17a41552",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2018-06-13T01:35:48Z",
    "title_canon_sha256": "b12f8bcea4cc6bfa7928bcf7a127e2eb47d1227ce3b4e0368a6b34dcdb14d587"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.04813",
    "kind": "arxiv",
    "version": 2
  }
}