Pith Number

pith:4CLQL234

pith:2013:4CLQL234Z3EICGGTASLEGAMZNN

not attested not anchored not stored refs pending

The busy function: a new analytic function for describing the integrated 21-cm spectral profile of galaxies

B\"arbel S. Koribalski, Danail Obreschkow, Lister Staveley-Smith, Russell Jurek, Tobias Westmeier

arxiv:1311.5308 v1 · 2013-11-21 · astro-ph.IM · 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{4CLQL234Z3EICGGTASLEGAMZNN}

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	2026-05-18T01:46:11.786506Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e09705eb7ccec88118d304964301996b7251dc3c94bc7351af2a2657571531fb

Aliases

arxiv: 1311.5308 · arxiv_version: 1311.5308v1 · doi: 10.48550/arxiv.1311.5308 · pith_short_12: 4CLQL234Z3EI · pith_short_16: 4CLQL234Z3EICGGT · pith_short_8: 4CLQL234

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/4CLQL234Z3EICGGTASLEGAMZNN \
  | 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: e09705eb7ccec88118d304964301996b7251dc3c94bc7351af2a2657571531fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55456afe6a3d3a1666778f195aa74d85c4e755189e72ce7b099b057174b889f2",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2013-11-21T04:01:17Z",
    "title_canon_sha256": "74514ca67c3fc1fd212ed45b7633dd267597fd75e408f71846b69ab384badb7b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.5308",
    "kind": "arxiv",
    "version": 1
  }
}