Pith Number

pith:CPBO6HSH

pith:2015:CPBO6HSHRFYF3V7JPECFDGIPTR

not attested not anchored not stored refs pending

Role of the H$_2^+$ channel in the primordial star formation under strong radiation field and the critical intensity for the supermassive star formation

Carla M. Coppola, Daniele Galli, Francesco Palla, Kazuyuki Omukai, Kazuyuki Sugimura

arxiv:1509.04562 v1 · 2015-09-15 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CPBO6HSHRFYF3V7JPECFDGIPTR}

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	2026-05-18T01:23:55.405596Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13c2ef1e4789705dd7e9790451990f9c5cf65d7738464f1f0e17d4477f166bed

Aliases

arxiv: 1509.04562 · arxiv_version: 1509.04562v1 · doi: 10.48550/arxiv.1509.04562 · pith_short_12: CPBO6HSHRFYF · pith_short_16: CPBO6HSHRFYF3V7J · pith_short_8: CPBO6HSH

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/CPBO6HSHRFYF3V7JPECFDGIPTR \
  | 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: 13c2ef1e4789705dd7e9790451990f9c5cf65d7738464f1f0e17d4477f166bed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "124a4052c6071dc06a336f983faa93ecbf8031cb8943181325658911c3c5b1ce",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-09-15T14:02:56Z",
    "title_canon_sha256": "5cc12bd0d5284206b038f1dc3e379b807f74424b77d391c02dfd79ddf98bff51"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.04562",
    "kind": "arxiv",
    "version": 1
  }
}