Pith Number

pith:6ZCSEJVG

pith:2020:6ZCSEJVGZ3UVA2KU7YRSSH2HFF

not attested not anchored not stored refs pending

The best of both worlds: Combining LOFAR and Apertif to derive resolved radio spectral index images

A.H.W.M. Coolen, A.M. Kutkin, B. Adebahr, B.Hut, B. Mingo, D.M. Lucero, D. Vohl, E.A.K. Adams, E. Orru', F. De Gasperin, F.M. Maccagni, G.M. Loose, G.M. van Diepen, H. Denes, H.J.A. Rottgering, I. Prandoni, J.M. van der Hulst, J. van Leeuwen, J. Ziemke, K.M. Hess, L.C. Oostrum, M. Brienza, M. Hardcastle, M.J. Norden, M. Ruiter, N. Jurlin, N.J. Vermaas, P.N. Best, R.I.J. Mostert, R. Kondapally, R. Morganti, R. Schulz, S. Damstra, S.S. Shabala, T.A. Oosterloo, T.W. Shimwell, V.A. Moss, W.J.G. de Blok, Y. Maan

arxiv:2011.08239 v1 · 2020-11-16 · 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{6ZCSEJVGZ3UVA2KU7YRSSH2HFF}

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	2026-07-05T02:31:45.442352Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6452226a6cee9506954fe23291f47297a07b69acd0d5b5898dccd27cfa45c2a

Aliases

arxiv: 2011.08239 · arxiv_version: 2011.08239v1 · doi: 10.48550/arxiv.2011.08239 · pith_short_12: 6ZCSEJVGZ3UV · pith_short_16: 6ZCSEJVGZ3UVA2KU · pith_short_8: 6ZCSEJVG

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/6ZCSEJVGZ3UVA2KU7YRSSH2HFF \
  | 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: f6452226a6cee9506954fe23291f47297a07b69acd0d5b5898dccd27cfa45c2a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8915a711271926afb8c3f293ddccbf0c5d79984907c6a2d584a18aa3f7a62c8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-11-16T19:32:11Z",
    "title_canon_sha256": "0c6482d1c54e198ca7a1886c571047f82bfee99c2b7bf0fdacdfc211417db1a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2011.08239",
    "kind": "arxiv",
    "version": 1
  }
}