Pith Number

pith:YLF2LANH

pith:2011:YLF2LANHQ4F5JXEBS52QH7R5NC

not attested not anchored not stored refs pending

The intergalactic medium over the last 10 billion years II: Metal-line absorption and physical conditions

Benjamin D. Oppenheimer, David H. Weinberg, Juna A. Kollmeier, Neal Katz, Romeel Dav\'e

arxiv:1106.1444 v2 · 2011-06-07 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YLF2LANHQ4F5JXEBS52QH7R5NC}

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	2026-05-18T02:01:41.011287Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c2cba581a7870bd4dc81977503fe3d689012b27abfeef1b0442d66d42577c5fa

Aliases

arxiv: 1106.1444 · arxiv_version: 1106.1444v2 · doi: 10.48550/arxiv.1106.1444 · pith_short_12: YLF2LANHQ4F5 · pith_short_16: YLF2LANHQ4F5JXEB · pith_short_8: YLF2LANH

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/YLF2LANHQ4F5JXEBS52QH7R5NC \
  | 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: c2cba581a7870bd4dc81977503fe3d689012b27abfeef1b0442d66d42577c5fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e070bea7fdb1b17a7f94f729ba12187ba6980f4b1c6e6d7deb5f06229cb60eda",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-06-07T20:09:57Z",
    "title_canon_sha256": "4bd52d645067cd85f6cb32dc9a41320ad022bc7e2c0de220b60f0a92148c49e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.1444",
    "kind": "arxiv",
    "version": 2
  }
}