Pith Number

pith:GJKFLDSR

pith:2009:GJKFLDSRQ2RZWGOQCAPQBSVM6O

not attested not anchored not stored refs pending

Galaxy Zoo: Passive Red Spirals

A. Kathy Romer (Sussex), Alexander S. Szalay, Anze Slosar, Ben Crowcroft, Chris J. Lintott (Oxford), Dan Andreescu, Edward M. Edmondson, Heather C. Campbell, Isabelle Doyle, Jan vandenBerg, Karen L. Masters (ICG, Kevin Schawinski (Yale), M. Jordan Raddick, Moein Mosleh (Sussex/Leiden), Phil Murray, Portsmouth), Robert C. Nichol (ICG, Steven P. Bamford (Nottingham)

arxiv:0910.4113 v3 · 2009-10-21 · 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{GJKFLDSRQ2RZWGOQCAPQBSVM6O}

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	2026-05-18T02:11:13.140092Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3254558e5186a39b19d0101f00caacf3b7609a988db85c5c0e066b989649a941

Aliases

arxiv: 0910.4113 · arxiv_version: 0910.4113v3 · doi: 10.48550/arxiv.0910.4113 · pith_short_12: GJKFLDSRQ2RZ · pith_short_16: GJKFLDSRQ2RZWGOQ · pith_short_8: GJKFLDSR

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/GJKFLDSRQ2RZWGOQCAPQBSVM6O \
  | 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: 3254558e5186a39b19d0101f00caacf3b7609a988db85c5c0e066b989649a941

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41527dc990a243b058a80c540da3db48fe753533cb8562b905376f3c231fb617",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-21T14:59:40Z",
    "title_canon_sha256": "87144d9c0fe6fa51ff27494f5bade26b3d7fa7ed3547346f5473bb8f72de6b34"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.4113",
    "kind": "arxiv",
    "version": 3
  }
}