Pith Number

pith:I4HPG5HY

pith:2013:I4HPG5HYTV4EH3GLSOX3COWPVT

not attested not anchored not stored refs pending

Clear evidence for the early triggering of a luminous quasar-like AGN in a major, gas rich merger

Clive N. Tadhunter, Cristina Ramos Almeida, Montserrat Villar Martin, Patricia S. Bessiere

arxiv:1311.6904 v2 · 2013-11-27 · 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{I4HPG5HYTV4EH3GLSOX3COWPVT}

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	2026-05-18T01:46:05.787514Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

470ef374f89d7843eccb93afb13acfacfeb317a99426fc3b8199f5c083301370

Aliases

arxiv: 1311.6904 · arxiv_version: 1311.6904v2 · doi: 10.48550/arxiv.1311.6904 · pith_short_12: I4HPG5HYTV4E · pith_short_16: I4HPG5HYTV4EH3GL · pith_short_8: I4HPG5HY

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/I4HPG5HYTV4EH3GLSOX3COWPVT \
  | 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: 470ef374f89d7843eccb93afb13acfacfeb317a99426fc3b8199f5c083301370

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76ad1241803e9c876ab13388fd364e9994f8ee90655495f638933dbee3098818",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-11-27T09:35:46Z",
    "title_canon_sha256": "fb7829783fe3c505cee24ebd7dac9083ddf48f54969851a218ef2017db47d7ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.6904",
    "kind": "arxiv",
    "version": 2
  }
}