Pith Number

pith:2YM2HEB2

pith:2001:2YM2HEB2IIFNBJ5BYHHU7E44ZI

not attested not anchored not stored refs pending

From Darkness To Light: The First Stars in the Universe

Paolo S. Coppi, Richard B. Larson, Volker Bromm

arxiv:astro-ph/0110459 v1 · 2001-10-20 · 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{2YM2HEB2IIFNBJ5BYHHU7E44ZI}

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	2026-07-04T16:24:19.143706Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d619a3903a420ad0a7a1c1cf4f939cca3f1e3c54b6639bb7d116a7e077a76aba

Aliases

arxiv: astro-ph/0110459 · arxiv_version: astro-ph/0110459v1 · doi: 10.48550/arxiv.astro-ph/0110459 · pith_short_12: 2YM2HEB2IIFN · pith_short_16: 2YM2HEB2IIFNBJ5B · pith_short_8: 2YM2HEB2

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/2YM2HEB2IIFNBJ5BYHHU7E44ZI \
  | 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: d619a3903a420ad0a7a1c1cf4f939cca3f1e3c54b6639bb7d116a7e077a76aba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f74f54072a77b9366eafdfc606261683e6482bb0dafc05b92121e6908bf82df",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-10-20T00:12:39Z",
    "title_canon_sha256": "05afad98600f5b82a5735f2721fd02969b742892a0f19a62749a60897dc58f7c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0110459",
    "kind": "arxiv",
    "version": 1
  }
}