Pith Number

pith:Z6DMGVC4

pith:2018:Z6DMGVC4FOT4Y5G545LNFLGNBY

not attested not anchored not stored refs pending

Analytic second-order energy derivatives in natural orbital functional theory

Ion Mitxelena, Mario Piris

arxiv:1802.05887 v1 · 2018-02-16 · 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{Z6DMGVC4FOT4Y5G545LNFLGNBY}

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	2026-05-18T00:23:10.641177Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf86c3545c2ba7cc74dde756d2accd0e2a982a6ceda20c3bec05dc6be127bb43

Aliases

arxiv: 1802.05887 · arxiv_version: 1802.05887v1 · doi: 10.48550/arxiv.1802.05887 · pith_short_12: Z6DMGVC4FOT4 · pith_short_16: Z6DMGVC4FOT4Y5G5 · pith_short_8: Z6DMGVC4

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/Z6DMGVC4FOT4Y5G545LNFLGNBY \
  | 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: cf86c3545c2ba7cc74dde756d2accd0e2a982a6ceda20c3bec05dc6be127bb43

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8617d30773fe80a16689f086f74e40cd651a62c518f89b3774675328798e4ced",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2018-02-16T10:37:14Z",
    "title_canon_sha256": "2ce7debf703e7d52abefd1d1a4119d400f2208d9590d14e052636537f890e5a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.05887",
    "kind": "arxiv",
    "version": 1
  }
}