Pith Number

pith:ZF7OH4KG

pith:2009:ZF7OH4KGPF4HJCQQDX6KEUGETP

not attested not anchored not stored refs pending

Galaxy Zoo Green Peas: Discovery of A Class of Compact Extremely Star-Forming Galaxies

Alex Szalay, Anze Slosar, Carolin N. Cardamone, Chris Lintott, C. M. Urry, Dan Andreescu, Daniel Thomas, Jan vandenBerg, John Parejko, Kevin Schawinski, Marc Sarzi, M. Jordan Raddick, Nicola Bennert, Phil Murray, Robert C. Nichol, Steven P. Bamford, William C. Keel

arxiv:0907.4155 v1 · 2009-07-23 · astro-ph.CO · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZF7OH4KGPF4HJCQQDX6KEUGETP}

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	2026-05-18T02:12:54.172805Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c97ee3f1467978748a101dfca250c49bceb4db0b8077f9173e0bc2dbcec18cce

Aliases

arxiv: 0907.4155 · arxiv_version: 0907.4155v1 · doi: 10.48550/arxiv.0907.4155 · pith_short_12: ZF7OH4KGPF4H · pith_short_16: ZF7OH4KGPF4HJCQQ · pith_short_8: ZF7OH4KG

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/ZF7OH4KGPF4HJCQQDX6KEUGETP \
  | 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: c97ee3f1467978748a101dfca250c49bceb4db0b8077f9173e0bc2dbcec18cce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1be36aa1bfd773fde941cbc7e8509ade48ee800e1fe74797fceb1f8fa8709e91",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-07-23T20:00:17Z",
    "title_canon_sha256": "f1324ad8074e19c2b778d069cab3a728822f673a205535103374da8c4c841c3c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.4155",
    "kind": "arxiv",
    "version": 1
  }
}