Pith Number

pith:GUZXQECA

pith:2008:GUZXQECA3WUK37L34CWVI2XQOV

not attested not anchored not stored refs pending

Formation of a Quasar Host Galaxy through a Wet Merger 1.4 Billion Years after the Big Bang

2, 5), Christopher L. Carilli (3), Dominik A. Riechers (1, Emmanuel Momjian (3) ((1) MPIA, Fabian Walter (1), Frank Bertoldi (4), Germany; (2) Caltech, Germany; (5) Hubble Fellow), USA; (3) NRAO, USA; (4) AIfA Bonn

arxiv:0808.3774 v1 · 2008-08-27 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GUZXQECA3WUK37L34CWVI2XQOV}

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	2026-05-18T04:40:20.727888Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3533781040dda8adfd7be0ad546af0754aceee2eddd7046d8d2f36a832d3b194

Aliases

arxiv: 0808.3774 · arxiv_version: 0808.3774v1 · doi: 10.48550/arxiv.0808.3774 · pith_short_12: GUZXQECA3WUK · pith_short_16: GUZXQECA3WUK37L3 · pith_short_8: GUZXQECA

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/GUZXQECA3WUK37L34CWVI2XQOV \
  | 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: 3533781040dda8adfd7be0ad546af0754aceee2eddd7046d8d2f36a832d3b194

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2b6e09f51286e91976d1a1f88c2322c837c3aef257361d7b9e2556bad6c1364",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-08-27T20:12:15Z",
    "title_canon_sha256": "4f4e14aceba0d1d52a3d11fd3a661fc4a87623a46358d9791073096ca2a55308"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.3774",
    "kind": "arxiv",
    "version": 1
  }
}