Pith Number

pith:USAR2C5J

pith:2006:USAR2C5JSRGMULNVIQ56MG7HB6

not attested not anchored not stored refs pending

The Influence of External UV Radiation Field on Primordial Gas Clouds: Formulation of the Problem

1) ((1) Institute of Physics, H.Niewodniczanski Institute of Nuclear Physics, Jagiellonian University, Jaroslaw Stasielak (1), Marek Kutschera (2, Poland), Poland (2) Astrophysics Division, Slawomir Stachniewicz (2)

arxiv:astro-ph/0612689 v1 · 2006-12-22 · astro-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{USAR2C5JSRGMULNVIQ56MG7HB6}

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	2026-05-18T04:26:44.428214Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4811d0ba9944cca2db5443be61be70faf78a27d8a85faa8a166f951370ae764

Aliases

arxiv: astro-ph/0612689 · arxiv_version: astro-ph/0612689v1 · doi: 10.48550/arxiv.astro-ph/0612689 · pith_short_12: USAR2C5JSRGM · pith_short_16: USAR2C5JSRGMULNV · pith_short_8: USAR2C5J

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/USAR2C5JSRGMULNVIQ56MG7HB6 \
  | 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: a4811d0ba9944cca2db5443be61be70faf78a27d8a85faa8a166f951370ae764

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07a766be582ff6a59ee4a5bc87bf7f2d8de69cb9c1e471d836ffb0ff3ba1a7b2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-12-22T14:57:43Z",
    "title_canon_sha256": "eef12efd50cec485b409c08b3ab42bb2bd3ac69324aeb044b03cd34824b5a405"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0612689",
    "kind": "arxiv",
    "version": 1
  }
}