Pith Number

pith:IZWI42F3

pith:2013:IZWI42F3UTSL36IH4HUWH6OQXS

not attested not anchored not stored refs pending

Confirmation of Faint Dwarf Galaxies in the M81 Group

Bradley A. Jacobs, Igor D. Karachentsev, Kristin Chiboucas, R. Brent Tully

arxiv:1309.4130 v1 · 2013-09-16 · 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{IZWI42F3UTSL36IH4HUWH6OQXS}

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	2026-05-18T01:47:36.945519Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

466c8e68bba4e4bdf907e1e963f9d0bca0a1c1fea2bf03fb5db18dae29796e80

Aliases

arxiv: 1309.4130 · arxiv_version: 1309.4130v1 · doi: 10.48550/arxiv.1309.4130 · pith_short_12: IZWI42F3UTSL · pith_short_16: IZWI42F3UTSL36IH · pith_short_8: IZWI42F3

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/IZWI42F3UTSL36IH4HUWH6OQXS \
  | 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: 466c8e68bba4e4bdf907e1e963f9d0bca0a1c1fea2bf03fb5db18dae29796e80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a00c8b56b625ea1ef706267a4221124bc6cd437a07e28592efbee94ac12c7f9a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-09-16T22:26:03Z",
    "title_canon_sha256": "17eca7d9588e295ebdded03acdf64b37dd3c4034c2a4faed80886ca58b8cb03a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.4130",
    "kind": "arxiv",
    "version": 1
  }
}