Pith Number

pith:7VFCXCPR

pith:2009:7VFCXCPRVG7YEV4TGOSFMOFAJ2

not attested not anchored not stored refs pending

Galaxy Zoo: A correlation between coherence of galaxy spin chirality and star formation efficiency

Alex Szalay, Anze Slosar, Chris Lintott, Dan Andreescu, Daniel Thomas, Jan vandenBerg, Kate Land, Kevin Schawinski, Licia Verde, M. Jordan Raddick, Phil Murray, Raul Jimenez, Robert Nichol, Steven Bamford

arxiv:0906.0994 v2 · 2009-06-05 · 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{7VFCXCPRVG7YEV4TGOSFMOFAJ2}

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	2026-05-18T04:25:01.975779Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd4a2b89f1a9bf82579333a45638a04eb05de5df989ce15a73cc1fc52d4db815

Aliases

arxiv: 0906.0994 · arxiv_version: 0906.0994v2 · doi: 10.48550/arxiv.0906.0994 · pith_short_12: 7VFCXCPRVG7Y · pith_short_16: 7VFCXCPRVG7YEV4T · pith_short_8: 7VFCXCPR

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/7VFCXCPRVG7YEV4TGOSFMOFAJ2 \
  | 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: fd4a2b89f1a9bf82579333a45638a04eb05de5df989ce15a73cc1fc52d4db815

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e81d13cea5636fa78a0de4a2594c79cce90ff0b8fc5c9d3dc5f1086fbb0833c4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-06-05T09:24:44Z",
    "title_canon_sha256": "9942746517e631530fe24aa128e1b9219ed1c50e01f730ec53cb9f786923a77b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.0994",
    "kind": "arxiv",
    "version": 2
  }
}