Pith Number

pith:JCLEKWXP

pith:2009:JCLEKWXP2EHJYKVFZVODRELSP5

not attested not anchored not stored refs pending

Dark Stars: A New Study of the FIrst Stars in the Universe

Douglas Spolyar, Katherine Freese, Paolo Gondolo, Peter Bodenheimer

arxiv:0903.0101 v1 · 2009-02-28 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JCLEKWXP2EHJYKVFZVODRELSP5}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:35:00.736452Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4896455aefd10e9c2aa5cd5c3891727f574c1b5f193f3a882ca262a463a07d7a

Aliases

arxiv: 0903.0101 · arxiv_version: 0903.0101v1 · doi: 10.48550/arxiv.0903.0101 · pith_short_12: JCLEKWXP2EHJ · pith_short_16: JCLEKWXP2EHJYKVF · pith_short_8: JCLEKWXP

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/JCLEKWXP2EHJYKVFZVODRELSP5 \
  | 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: 4896455aefd10e9c2aa5cd5c3891727f574c1b5f193f3a882ca262a463a07d7a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44b73b06a42495d2da26abcbf58e0a928f13fa840fc39ec1361c5518b68c1c36",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-02-28T19:46:52Z",
    "title_canon_sha256": "3baf54afd26aff795ceeaeeae427981e14e97ae3813e39c0e57b4a843985154c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.0101",
    "kind": "arxiv",
    "version": 1
  }
}