Pith Number

pith:ACOQKRC7

pith:2001:ACOQKRC7SGSCGY3C2R5FCBMCQT

not attested not anchored not stored refs pending

Oxygen in the Very Early Galaxy

G. Basri (UC Berkeley), G.Israelian (IAC), N. Shchukina (Kiev Obs.), P. Bonifacio (Trieste Obs.), P. Molaro (Trieste Obs.), R. Garcia Lopez (IAC), R. Rebolo (IAC)

arxiv:astro-ph/0101032 v1 · 2001-01-03 · 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{ACOQKRC7SGSCGY3C2R5FCBMCQT}

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	2026-05-18T04:29:05.266391Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

009d05445f91a4236362d47a51058284c878707e81bdce62e46eecfdb88d168b

Aliases

arxiv: astro-ph/0101032 · arxiv_version: astro-ph/0101032v1 · doi: 10.48550/arxiv.astro-ph/0101032 · pith_short_12: ACOQKRC7SGSC · pith_short_16: ACOQKRC7SGSCGY3C · pith_short_8: ACOQKRC7

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/ACOQKRC7SGSCGY3C2R5FCBMCQT \
  | 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: 009d05445f91a4236362d47a51058284c878707e81bdce62e46eecfdb88d168b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba445b4c2605628e1dac769e6399a8b369d47195cf4430fcca060ee64540ea40",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-01-03T10:47:02Z",
    "title_canon_sha256": "153936c8569290dbe82dcffc318cc2303bb33ceb3dc51900e265b49a2acd2c6a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0101032",
    "kind": "arxiv",
    "version": 1
  }
}