Pith Number

pith:D56NBWZU

pith:2011:D56NBWZU5YOXYB6UE3FBG7TYU5

not attested not anchored not stored refs pending

The Lyman-alpha forest in a blazar-heated Universe

Avery E. Broderick, Christoph Pfrommer, Ewald Puchwein, Philip Chang, Volker Springel

arxiv:1107.3837 v2 · 2011-07-19 · 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{D56NBWZU5YOXYB6UE3FBG7TYU5}

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	2026-05-18T02:01:14.673032Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f7cd0db34ee1d7c07d426ca137e78a7653df29d54ca1ab5f853a50fade5448e

Aliases

arxiv: 1107.3837 · arxiv_version: 1107.3837v2 · doi: 10.48550/arxiv.1107.3837 · pith_short_12: D56NBWZU5YOX · pith_short_16: D56NBWZU5YOXYB6U · pith_short_8: D56NBWZU

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/D56NBWZU5YOXYB6UE3FBG7TYU5 \
  | 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: 1f7cd0db34ee1d7c07d426ca137e78a7653df29d54ca1ab5f853a50fade5448e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b0cec9e8ff44c73bffe41d18d3deedf3201dd57b8477cab22e4226bd0504bd7e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-07-19T20:00:01Z",
    "title_canon_sha256": "82fbb71c828efab5f3728bb93e9f8d13eb9caf86a461821170015c12f91785b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.3837",
    "kind": "arxiv",
    "version": 2
  }
}