Pith Number

pith:R32U2QAL

pith:2012:R32U2QALXG3QE7K7HWKTJLHTD3

not attested not anchored not stored refs pending

A new candidate for probing Population III nucleosynthesis with carbon-enhanced damped Lyman-alpha systems

2), (2) Swinburne University of Technology, 3), (3) International Centre for Radio Astronomy Research), Max Pettini (1, Michael Murphy (2) ((1) Institute of Astronomy, Ryan Cooke (1, University of Cambridge

arxiv:1201.1004 v2 · 2012-01-04 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R32U2QALXG3QE7K7HWKTJLHTD3}

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	2026-05-18T01:58:57.577822Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ef54d400bb9b7027d5f3d9534acf31ec772873a8638baf82ade960cb8509b39

Aliases

arxiv: 1201.1004 · arxiv_version: 1201.1004v2 · doi: 10.48550/arxiv.1201.1004 · pith_short_12: R32U2QALXG3Q · pith_short_16: R32U2QALXG3QE7K7 · pith_short_8: R32U2QAL

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/R32U2QALXG3QE7K7HWKTJLHTD3 \
  | 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: 8ef54d400bb9b7027d5f3d9534acf31ec772873a8638baf82ade960cb8509b39

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e699294b44c7377684a1941bde1e97393c166f7941a547378c5feda30bc7850",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-01-04T21:02:15Z",
    "title_canon_sha256": "0e9eedbd020dd3498efde76b3744f749f90cd146bbf97f33af95ca13da4945b8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.1004",
    "kind": "arxiv",
    "version": 2
  }
}