Pith Number

pith:LD7UCFJZ

pith:2013:LD7UCFJZX5VA33LAI5XXJZMHTR

not attested not anchored not stored refs pending

Effects of External Radiation Fields on Line Emission - Application to Star-forming Regions

Gary Ferland, Marios Chatzikos, Peter van Hoof, Robin Williams, Ryan Porter

arxiv:1310.7889 v1 · 2013-10-29 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LD7UCFJZX5VA33LAI5XXJZMHTR}

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	2026-05-18T03:05:37.381271Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

58ff411539bf6a0ded60476f74e5879c440edf154c7618fbc39480a3786d817f

Aliases

arxiv: 1310.7889 · arxiv_version: 1310.7889v1 · doi: 10.48550/arxiv.1310.7889 · pith_short_12: LD7UCFJZX5VA · pith_short_16: LD7UCFJZX5VA33LA · pith_short_8: LD7UCFJZ

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/LD7UCFJZX5VA33LAI5XXJZMHTR \
  | 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: 58ff411539bf6a0ded60476f74e5879c440edf154c7618fbc39480a3786d817f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1417518be9b3df49e2cc57cda0d3e20dc9c65cdd6cf4863d75c83e2246686a60",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-10-29T17:27:43Z",
    "title_canon_sha256": "6fd5bc7a29ca05ed4a5f360c1a6de445e052c0fb5f99fb108272d26180256ddd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.7889",
    "kind": "arxiv",
    "version": 1
  }
}