Pith Number

pith:IZUSV4ZI

pith:2018:IZUSV4ZIQGWWDGGAFLS6MXRUKG

not attested not anchored not stored refs pending

FastChem: A computer program for efficient complex chemical equilibrium calculations in the neutral/ionized gas phase with applications to stellar and planetary atmospheres

A.B.C. Patzer, D. Kitzmann, E. Sedlmayr, J.W. Stock

arxiv:1804.05010 v1 · 2018-04-13 · astro-ph.EP · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IZUSV4ZIQGWWDGGAFLS6MXRUKG}

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	2026-05-18T00:12:17.583313Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46692af32881ad6198c02ae5e65e34518e5efd2798427729bc8db52efbf23ee9

Aliases

arxiv: 1804.05010 · arxiv_version: 1804.05010v1 · doi: 10.48550/arxiv.1804.05010 · pith_short_12: IZUSV4ZIQGWW · pith_short_16: IZUSV4ZIQGWWDGGA · pith_short_8: IZUSV4ZI

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/IZUSV4ZIQGWWDGGAFLS6MXRUKG \
  | 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: 46692af32881ad6198c02ae5e65e34518e5efd2798427729bc8db52efbf23ee9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3cb6403e8dca98816443c1f94e090151fba96d73f515209a73f357f7d9058411",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-04-13T16:10:10Z",
    "title_canon_sha256": "bc58a7187cbd0be76f8adccc4eb333c543977a1a36c4327846bf46f80a8850ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.05010",
    "kind": "arxiv",
    "version": 1
  }
}