Pith Number

pith:QD3VDY6B

pith:2011:QD3VDY6BK23I7WNWIRK2B66RZZ

not attested not anchored not stored refs pending

Galaxy Zoo: Bar Lengths in Nearby Disk Galaxies

Arfon M. Smith, Ben Hoyle, Chris Lintott, Daniel Thomas, Edward M. Edmondson, Karen. L. Masters, Kevin Schawinski, Robert C. Nichol, Ryan Scranton, Steven Bamford

arxiv:1104.5394 v1 · 2011-04-28 · 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{QD3VDY6BK23I7WNWIRK2B66RZZ}

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	2026-05-18T02:02:13.562791Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80f751e3c156b68fd9b64455a0fbd1ce6d656180912800a0f18bcb5d7468fec7

Aliases

arxiv: 1104.5394 · arxiv_version: 1104.5394v1 · doi: 10.48550/arxiv.1104.5394 · pith_short_12: QD3VDY6BK23I · pith_short_16: QD3VDY6BK23I7WNW · pith_short_8: QD3VDY6B

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/QD3VDY6BK23I7WNWIRK2B66RZZ \
  | 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: 80f751e3c156b68fd9b64455a0fbd1ce6d656180912800a0f18bcb5d7468fec7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "95c2259f830401bfae57b0bb65bdbd164b66f9892893fa30390fd318ab5e1f9c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-04-28T13:59:09Z",
    "title_canon_sha256": "a64be7e2ec2b575d1a4e43adadfc3d7209a992f469eac6757cf84d315c08db28"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.5394",
    "kind": "arxiv",
    "version": 1
  }
}