Pith Number

pith:UD7CXAOM

pith:2013:UD7CXAOMI6AEVNESOYJIXJ2OIU

not attested not anchored not stored refs pending

Dissecting the properties of optically-thick hydrogen at the peak of cosmic star formation history

Gabor Worseck, John M. O'Meara, J. Xavier Prochaska, Michele Fumagalli

arxiv:1308.1101 v2 · 2013-08-05 · 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{UD7CXAOMI6AEVNESOYJIXJ2OIU}

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	2026-05-18T01:48:23.533547Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0fe2b81cc47804ab49276128ba74e45031df3802a8862e283e0e5ba0e342843

Aliases

arxiv: 1308.1101 · arxiv_version: 1308.1101v2 · doi: 10.48550/arxiv.1308.1101 · pith_short_12: UD7CXAOMI6AE · pith_short_16: UD7CXAOMI6AEVNES · pith_short_8: UD7CXAOM

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/UD7CXAOMI6AEVNESOYJIXJ2OIU \
  | 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: a0fe2b81cc47804ab49276128ba74e45031df3802a8862e283e0e5ba0e342843

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a21144e2e4914ee30e5e07daf8a1e5c63d5f1b962d4da0a67e013f2a098ecc2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-08-05T20:00:04Z",
    "title_canon_sha256": "a9fff38ba87f37f755b5e53e51d6d60f2581eb035f8a2f4a1f842c247c138a5f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.1101",
    "kind": "arxiv",
    "version": 2
  }
}