Pith Number

pith:FGHG2X45

pith:2009:FGHG2X45ZXVNM2ZZ72OKZG2XXC

not attested not anchored not stored refs pending

Understanding the Astrophysics of Galaxy Evolution: the role of spectroscopic surveys in the next decade

Alex Szalay, Arjun Dey, Carlos Frenk, Christy Tremonti, Claudia Maraston, Daniel Eisenstein, David Schlegel, Eric Bell, Francisco Prada, Guinevere Kauffmann, James Larkin, Jenny Greene, Jerry Ostriker, Jill Knapp, Jim Gunn, Kirpal Nandra, Marc Davis, Mariska Kriek, Martin Elvis, Martin White, Michael Strauss, Pieter van Dokkum, Reinhard Genzel, Richard Ellis, Rosie Wyse, Sandra Faber, Simon White

arxiv:0903.3404 v2 · 2009-03-19 · 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{FGHG2X45ZXVNM2ZZ72OKZG2XXC}

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	2026-07-04T15:40:04.036531Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

298e6d5f9dcdead66b39fe9cac9b57b89d07e558f8e44d628e6d64a9f3a3c18c

Aliases

arxiv: 0903.3404 · arxiv_version: 0903.3404v2 · doi: 10.48550/arxiv.0903.3404 · pith_short_12: FGHG2X45ZXVN · pith_short_16: FGHG2X45ZXVNM2ZZ · pith_short_8: FGHG2X45

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/FGHG2X45ZXVNM2ZZ72OKZG2XXC \
  | 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: 298e6d5f9dcdead66b39fe9cac9b57b89d07e558f8e44d628e6d64a9f3a3c18c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bafca94d7c035b0db6dcfcb5ebf0e770fb1f5e4838a92ff0afadb7a97e76ac4e",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-03-19T20:11:46Z",
    "title_canon_sha256": "63a3c8ac1c9f09a6c7767683d71b78a9de6a73a73ce86911aac7bdc11a9062ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.3404",
    "kind": "arxiv",
    "version": 2
  }
}