Pith Number

pith:Z2SFY6XY

pith:2001:Z2SFY6XYRETPY62DXSNTUH6PG6

not attested not anchored not stored refs pending

Criteria for the Formation of Population III Objects in the Ultraviolet Background Radiation

H. Susa, M. Umemura, S. Ikeuchi, T. Kitayama

arxiv:astro-ph/0105293 v1 · 2001-05-17 · 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{Z2SFY6XYRETPY62DXSNTUH6PG6}

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	2026-05-18T01:22:59.043998Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cea45c7af88926fc7b43bc9b3a1fcf37978b26d8b9b3fb1f27aa94f5803e70fd

Aliases

arxiv: astro-ph/0105293 · arxiv_version: astro-ph/0105293v1 · doi: 10.48550/arxiv.astro-ph/0105293 · pith_short_12: Z2SFY6XYRETP · pith_short_16: Z2SFY6XYRETPY62D · pith_short_8: Z2SFY6XY

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/Z2SFY6XYRETPY62DXSNTUH6PG6 \
  | 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: cea45c7af88926fc7b43bc9b3a1fcf37978b26d8b9b3fb1f27aa94f5803e70fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1cd02b62fb5a03361ad111ab8969970a6db859dd037fbc42101913db758a4f97",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-05-17T00:11:50Z",
    "title_canon_sha256": "b4c25f39158a94e714e9a83fc0f101d05fecba82fd4f23a28dcaa04ccdb5cb76"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0105293",
    "kind": "arxiv",
    "version": 1
  }
}