Pith Number

pith:255HLWY2

pith:2013:255HLWY2DNPNS3WLX7ESMRY7F4

not attested not anchored not stored refs pending

LOFAR imaging capabilities and system sensitivity

A.G. de Bruyn, M. Pandey-Pommier, R.J. Nijboer

arxiv:1308.4267 v2 · 2013-08-20 · astro-ph.IM · 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{255HLWY2DNPNS3WLX7ESMRY7F4}

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	2026-05-18T03:15:20.288297Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d77a75db1a1b5ed96ecbbfc926471f2f2124cc6e178badf1f5d91bd596b7f0aa

Aliases

arxiv: 1308.4267 · arxiv_version: 1308.4267v2 · doi: 10.48550/arxiv.1308.4267 · pith_short_12: 255HLWY2DNPN · pith_short_16: 255HLWY2DNPNS3WL · pith_short_8: 255HLWY2

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/255HLWY2DNPNS3WLX7ESMRY7F4 \
  | 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: d77a75db1a1b5ed96ecbbfc926471f2f2124cc6e178badf1f5d91bd596b7f0aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2904e1c2dfb7047278f0748dc66dfde5be251900d038304051c521ad56e92288",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2013-08-20T09:28:56Z",
    "title_canon_sha256": "dc487b5da4f01bf256a4e4bff0f26864e5ae48131382f9422be3d81270c34da3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.4267",
    "kind": "arxiv",
    "version": 2
  }
}