Pith Number

pith:FCIQQN56

pith:2013:FCIQQN567DDIC3M56R3IFPGFRI

not attested not anchored not stored refs pending

Widefield VLBI observations of M31: A Unique Probe of the Ionized ISM of a nearby galaxy

Adam Deller, Cathryn M. Trott, Enno Middelberg, James Miller-Jones, Jean-Pierre Macquart, John S. Morgan, Megan K. Argo, Steven J. Tingay

arxiv:1302.6239 v1 · 2013-02-25 · 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{FCIQQN567DDIC3M56R3IFPGFRI}

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	2026-05-18T01:51:28.639062Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28910837bef8c6816d9df47682bcc58a3187632d02881dee7454260cce904e71

Aliases

arxiv: 1302.6239 · arxiv_version: 1302.6239v1 · doi: 10.48550/arxiv.1302.6239 · pith_short_12: FCIQQN567DDI · pith_short_16: FCIQQN567DDIC3M5 · pith_short_8: FCIQQN56

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/FCIQQN567DDIC3M56R3IFPGFRI \
  | 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: 28910837bef8c6816d9df47682bcc58a3187632d02881dee7454260cce904e71

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9eb3a6e5727fb3f8c13b3761d447afc8d2736a669b45976eb36df4ead1224c31",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-02-25T21:00:03Z",
    "title_canon_sha256": "1099cf8d9fe9d56d98a3e2e6e5aca7ce208a715b7e2a08f0446b42b0579c5b4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.6239",
    "kind": "arxiv",
    "version": 1
  }
}