Pith Number

pith:R3UG6AW6

pith:2003:R3UG6AW6OWV2JD4UL6IBK6LXMF

not attested not anchored not stored refs pending

LOFAR: A new radio telescope for low frequency radio observations: Science and project status

A. G. de Bruyn, G. K Miley, H. Rottgering, J. Kuijpers, M. Johnston-Hollitt, M. P. van Haarlem, R. P. Fender

arxiv:astro-ph/0307240 v1 · 2003-07-11 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R3UG6AW6OWV2JD4UL6IBK6LXMF}

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	2026-05-18T00:37:17.575225Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ee86f02de75aba48f945f90157977616960b4e9fae74fb4563644c56ed90262

Aliases

arxiv: astro-ph/0307240 · arxiv_version: astro-ph/0307240v1 · doi: 10.48550/arxiv.astro-ph/0307240 · pith_short_12: R3UG6AW6OWV2 · pith_short_16: R3UG6AW6OWV2JD4U · pith_short_8: R3UG6AW6

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/R3UG6AW6OWV2JD4UL6IBK6LXMF \
  | 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: 8ee86f02de75aba48f945f90157977616960b4e9fae74fb4563644c56ed90262

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e8e9389e23d3a263d09c4443a05d879c6eb55a1dda86840a811b27353af65a9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-07-11T10:46:57Z",
    "title_canon_sha256": "846189adaf7e80d892250e9f04646df7a0cc2a0525b3a76efd945c4f98cb9654"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0307240",
    "kind": "arxiv",
    "version": 1
  }
}