Pith Number

pith:Q2CD6HSJ

pith:2018:Q2CD6HSJ2FBVVOWUQDIAFLIBLJ

not attested not anchored not stored refs pending

Machine learning enhanced global optimization by clustering local environments to enable bundled atomic energies

Bj{\o}rk Hammer, Esben L. Kolsbjerg, S{\o}ren A. Meldgaard

arxiv:1807.04605 v2 · 2018-07-12 · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q2CD6HSJ2FBVVOWUQDIAFLIBLJ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:03:46.220280Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86843f1e49d1435abad480d002ad015a74349e56f085e14565902f58f7441352

Aliases

arxiv: 1807.04605 · arxiv_version: 1807.04605v2 · doi: 10.48550/arxiv.1807.04605 · pith_short_12: Q2CD6HSJ2FBV · pith_short_16: Q2CD6HSJ2FBVVOWU · pith_short_8: Q2CD6HSJ

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/Q2CD6HSJ2FBVVOWUQDIAFLIBLJ \
  | 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: 86843f1e49d1435abad480d002ad015a74349e56f085e14565902f58f7441352

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cfeceab92f8e396791b6ab574950797c3568747a0573f292bdcfb9d457609779",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2018-07-12T13:41:33Z",
    "title_canon_sha256": "7e00fe25524c8fe0043742a78fb9bc640be73b4f3b17e89eac35518189ec09a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.04605",
    "kind": "arxiv",
    "version": 2
  }
}