Pith Number

pith:4OVGUAWN

pith:2011:4OVGUAWN3G2EWYY3PDDDKP5TR5

not attested not anchored not stored refs pending

On Lyman-limit Systems and the Evolution of the Intergalactic Ionizing Background

C.-A. Faucher-Giguere, Matthew McQuinn, S. Peng Oh

arxiv:1101.1964 v2 · 2011-01-10 · 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{4OVGUAWN3G2EWYY3PDDDKP5TR5}

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	2026-05-18T04:06:33.312613Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3aa6a02cdd9b44b631b78c6353fb38f446f70844c26fe379517901b11840d93

Aliases

arxiv: 1101.1964 · arxiv_version: 1101.1964v2 · doi: 10.48550/arxiv.1101.1964 · pith_short_12: 4OVGUAWN3G2E · pith_short_16: 4OVGUAWN3G2EWYY3 · pith_short_8: 4OVGUAWN

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/4OVGUAWN3G2EWYY3PDDDKP5TR5 \
  | 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: e3aa6a02cdd9b44b631b78c6353fb38f446f70844c26fe379517901b11840d93

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f18e254844f8d67b0e912c0b2b68e9f17bf8e9852b39b0cd4fc95993d7f29128",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-01-10T21:02:46Z",
    "title_canon_sha256": "3e14f86248e69c805c96ae23c830c4a5948dd5fdf37ef355f1d1839c5817ad64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.1964",
    "kind": "arxiv",
    "version": 2
  }
}