Pith Number

pith:3BIDLUSY

pith:2003:3BIDLUSYQ7EHCDZ6ZJUYSUMWKA

not attested not anchored not stored refs pending

Reionisation, chemical enrichment and seed black holes from the first stars: is Population III important?

Cambridge), Jeremiah P. Ostriker (IoA, Massimo Ricotti

arxiv:astro-ph/0310331 v3 · 2003-10-13 · 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{3BIDLUSYQ7EHCDZ6ZJUYSUMWKA}

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	2026-07-04T15:20:12.586552Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d85035d25887c8710f3eca6989519650165573b5705d7127c51b0883fb387a6b

Aliases

arxiv: astro-ph/0310331 · arxiv_version: astro-ph/0310331v3 · doi: 10.48550/arxiv.astro-ph/0310331 · pith_short_12: 3BIDLUSYQ7EH · pith_short_16: 3BIDLUSYQ7EHCDZ6 · pith_short_8: 3BIDLUSY

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/3BIDLUSYQ7EHCDZ6ZJUYSUMWKA \
  | 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: d85035d25887c8710f3eca6989519650165573b5705d7127c51b0883fb387a6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cea04d971b240d94804873848f1a3461b2b18d4eab72a2b5c385067b964b5b51",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-10-13T16:38:52Z",
    "title_canon_sha256": "b0bc9be7c8861038b7ddeb8325e32ea66389150987c505acc28692d91036641d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0310331",
    "kind": "arxiv",
    "version": 3
  }
}