Pith Number

pith:JX4Y5QZW

pith:2024:JX4Y5QZW5STRL44UVF62HJMVSH

not attested not anchored not stored refs pending

Advancing Thermodynamic Group-Contribution Methods by Machine Learning: UNIFAC 2.0

Fabian Jirasek, Hans Hasse, Nicolas Hayer, Stephan Mandt, Thorsten Wendel

arxiv:2408.05220 v1 · 2024-07-25 · 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{JX4Y5QZW5STRL44UVF62HJMVSH}

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	2026-07-05T10:05:44.410485Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4df98ec336eca715f394a97da3a59591fd2ea7101d115be4e5aa645c532b368e

Aliases

arxiv: 2408.05220 · arxiv_version: 2408.05220v1 · doi: 10.48550/arxiv.2408.05220 · pith_short_12: JX4Y5QZW5STR · pith_short_16: JX4Y5QZW5STRL44U · pith_short_8: JX4Y5QZW

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/JX4Y5QZW5STRL44UVF62HJMVSH \
  | 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: 4df98ec336eca715f394a97da3a59591fd2ea7101d115be4e5aa645c532b368e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "095507a9f2718bcbb73481c8e8e0fc9558db6534b4816c25388d38742cadbfb3",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2024-07-25T13:04:58Z",
    "title_canon_sha256": "5ab309bbcf3ea658b6d19818bbea68dffc09c894972abfc8db30e2963ac86605"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2408.05220",
    "kind": "arxiv",
    "version": 1
  }
}