Pith Number

pith:JLKFF2OR

pith:2013:JLKFF2ORLG6YHZZ6JZ7PCFXVIX

not attested not anchored not stored refs pending

PORTA: A three-dimensional multilevel radiative transfer code for modeling the intensity and polarization of spectral lines with massively parallel computers

Javier Trujillo Bueno, Jiri Stepan

arxiv:1307.4217 v2 · 2013-07-16 · astro-ph.SR · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JLKFF2ORLG6YHZZ6JZ7PCFXVIX}

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	2026-05-18T01:48:49.711690Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4ad452e9d159bd83e73e4e7ef116f545f7bca4ba6054e476b6a02a71df5f98d1

Aliases

arxiv: 1307.4217 · arxiv_version: 1307.4217v2 · doi: 10.48550/arxiv.1307.4217 · pith_short_12: JLKFF2ORLG6Y · pith_short_16: JLKFF2ORLG6YHZZ6 · pith_short_8: JLKFF2OR

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/JLKFF2ORLG6YHZZ6JZ7PCFXVIX \
  | 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: 4ad452e9d159bd83e73e4e7ef116f545f7bca4ba6054e476b6a02a71df5f98d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8c1e7d1c0e05d73708b37b2d94da48a7e95ae79d0d1a82844b87cbca2f0cb90",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-07-16T09:36:40Z",
    "title_canon_sha256": "4fe8aa1eb497a3b70cede339513e8504713d453e978d5b47e51abd7f4f32197d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.4217",
    "kind": "arxiv",
    "version": 2
  }
}