Pith Number

pith:QKPVYEJT

pith:2013:QKPVYEJTARZ5HONZBGGCA7I5ZD

not attested not anchored not stored refs pending

Star Formation in Nearby Isolated Galaxies

H.M.Courtois, I.D.Karachentsev, O.V.Melnyk, V.E.Karachentseva

arxiv:1307.5171 v2 · 2013-07-19 · 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{QKPVYEJTARZ5HONZBGGCA7I5ZD}

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	2026-05-18T03:17:56.141714Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

829f5c11330473d3b9b9098c207d1dc8da7c2242eb10701a43cc30e50eb709b3

Aliases

arxiv: 1307.5171 · arxiv_version: 1307.5171v2 · doi: 10.48550/arxiv.1307.5171 · pith_short_12: QKPVYEJTARZ5 · pith_short_16: QKPVYEJTARZ5HONZ · pith_short_8: QKPVYEJT

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/QKPVYEJTARZ5HONZBGGCA7I5ZD \
  | 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: 829f5c11330473d3b9b9098c207d1dc8da7c2242eb10701a43cc30e50eb709b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28b24327edf5c72dd709059dd36c0aaa0b05cb600cb7db8d6d2b7b665e923ded",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-07-19T09:55:08Z",
    "title_canon_sha256": "ab870d868b64c1325ee961ce8714ceb1f4551a6332b7363384ec3893d733a56d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.5171",
    "kind": "arxiv",
    "version": 2
  }
}