Pith Number

pith:X6BO6FS4

pith:2020:X6BO6FS46S64QEXV7BMWAVLTOZ

not attested not anchored not stored refs pending

Cassiopeia A, Cygnus A, Taurus A, and Virgo A at ultra-low radio frequencies

A. Asgekar, A. Bonafede, A.J. van der Horst, A. Krankowski, A. Nelles, A.R. Offringa, A. Rowlinson, A. Shulevski, A. van Ardenne, A.W. Gunst, B. Ciardi, C. Vocks, D. Engels, D.J. Schwarz, E. Orru, F. Breitling, F. De Gasperin, G. Heald, G. Mann, G. Miley, H. Paas, H.R. Butcher, J. Eisloffel, J. Horandel, J.P. McKean, J. Vink, L.V.E. Koopmans, M.A. Garrett, M. Bruggen, M.C. Toribio, M. de Vos, M.J. Bentum, M.J. Norden, M. Mevius, M. Pandey-Pommier, M.P. van Haarlem, M. Soida, M. Tagger, O. Smirnov, O. Wucknitz, P. Maat, P. Zarka, P. Zucca, R.A. Fallows, R. Blaauw, R. J. van Weeren, R. Pizzo, S. Duscha, T.M.O. Franzen, V. Cuciti, W.N. Brouw, W. Reich

arxiv:2002.10431 v1 · 2020-02-24 · astro-ph.HE · astro-ph.GA · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{X6BO6FS46S64QEXV7BMWAVLTOZ}

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	2026-07-05T00:51:42.106245Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf82ef165cf4bdc812f5f85960557376502ad8bba1147ddc11d161a52d964a9c

Aliases

arxiv: 2002.10431 · arxiv_version: 2002.10431v1 · doi: 10.48550/arxiv.2002.10431 · pith_short_12: X6BO6FS46S64 · pith_short_16: X6BO6FS46S64QEXV · pith_short_8: X6BO6FS4

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/X6BO6FS46S64QEXV7BMWAVLTOZ \
  | 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: bf82ef165cf4bdc812f5f85960557376502ad8bba1147ddc11d161a52d964a9c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2cf6764f1d4b39d5b56f0f542666195d749e5fe577348d478c478e50fa17158",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2020-02-24T18:22:38Z",
    "title_canon_sha256": "f4fa42d1e019b5e7fa4c01dba77051b7a50af059a1ae4121d8fa9ec3cb8e888a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.10431",
    "kind": "arxiv",
    "version": 1
  }
}