Pith Number

pith:45AZTXIR

pith:2010:45AZTXIRF7YAGOGD2UM6ZUXSG6

not attested not anchored not stored refs pending

The intergalactic medium over the last 10 billion years I: Lyman alpha absorption and physical conditions

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

arxiv:1005.2421 v2 · 2010-05-13 · 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{45AZTXIRF7YAGOGD2UM6ZUXSG6}

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	2026-05-18T02:07:33.044920Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e74199dd112ff00338c3d519ecd2f237a4c0c1cfb6907858361b0b309e18e49f

Aliases

arxiv: 1005.2421 · arxiv_version: 1005.2421v2 · doi: 10.48550/arxiv.1005.2421 · pith_short_12: 45AZTXIRF7YA · pith_short_16: 45AZTXIRF7YAGOGD · pith_short_8: 45AZTXIR

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/45AZTXIRF7YAGOGD2UM6ZUXSG6 \
  | 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: e74199dd112ff00338c3d519ecd2f237a4c0c1cfb6907858361b0b309e18e49f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "852d973b82bcea3bdefd9763fd608e40e1ba3579394abdf883459f95e614603f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-05-13T20:40:17Z",
    "title_canon_sha256": "6a31c3127f22015b0aaa8eacfe63d428b916a372d45440e06cedabf644014d4a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.2421",
    "kind": "arxiv",
    "version": 2
  }
}