Pith Number

pith:CJPQ6GFK

pith:2021:CJPQ6GFKVLHIDYS7ZMTLAY2SRT

not attested not anchored not stored refs pending

Radio multifrequency observations of galaxy clusters. The Abell 399$-$401 pair

A. Bonafede, C. D. Nunhokee, D. Dallacasa, E. Orr\'u, F. Govoni, G. Bernardi, M. Murgia, O. M. Smirnov, R. F. Pizzo, S. Manti, T. Venturi, V. Vacca

arxiv:2102.02900 v3 · 2021-02-04 · 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{CJPQ6GFKVLHIDYS7ZMTLAY2SRT}

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	2026-07-05T06:10:13.471887Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

125f0f18aaaace81e25fcb26b063528cd6eefccc6ed407450bac41630b7dfea4

Aliases

arxiv: 2102.02900 · arxiv_version: 2102.02900v3 · doi: 10.48550/arxiv.2102.02900 · pith_short_12: CJPQ6GFKVLHI · pith_short_16: CJPQ6GFKVLHIDYS7 · pith_short_8: CJPQ6GFK

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/CJPQ6GFKVLHIDYS7ZMTLAY2SRT \
  | 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: 125f0f18aaaace81e25fcb26b063528cd6eefccc6ed407450bac41630b7dfea4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "026c8933a744eaf3b696ce2fba681061e6ea9452c18f06f77ac634e114d66ccd",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2021-02-04T21:38:58Z",
    "title_canon_sha256": "f3ff54c8ebe712f996b50c21556030d35c863d822026b721617f0ba27679ba2a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.02900",
    "kind": "arxiv",
    "version": 3
  }
}