Pith Number

pith:5JUFJLL7

pith:2011:5JUFJLL7KYPMH63NQQFBESICHH

not attested not anchored not stored refs pending

Scale Length of Disk Galaxies in the Local Universe

Kambiz Fathi

arxiv:1101.1339 v1 · 2011-01-07 · 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{5JUFJLL7KYPMH63NQQFBESICHH}

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	2026-05-18T02:23:00.322784Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ea6854ad7f561ec3fb6d840a12490239d7c1ef6c3bfb2dc528a1ce8cd26aa1df

Aliases

arxiv: 1101.1339 · arxiv_version: 1101.1339v1 · doi: 10.48550/arxiv.1101.1339 · pith_short_12: 5JUFJLL7KYPM · pith_short_16: 5JUFJLL7KYPMH63N · pith_short_8: 5JUFJLL7

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/5JUFJLL7KYPMH63NQQFBESICHH \
  | 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: ea6854ad7f561ec3fb6d840a12490239d7c1ef6c3bfb2dc528a1ce8cd26aa1df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a09e031b015ec493ad06709b2c9d10436ec9e3a28e75c5fb9841cda2e570ce74",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-01-07T01:25:51Z",
    "title_canon_sha256": "efdb3b2ff296f9af6dc2250298b9b5a2c6a0c23a7d935435cbc570c937145018"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.1339",
    "kind": "arxiv",
    "version": 1
  }
}