Pith Number

pith:QJNDV5IQ

pith:2013:QJNDV5IQQ7RDUP2RYC6BGBSFNO

not attested not anchored not stored refs pending

The Densest Galaxy

Aaron Romanowsky (San Jose St, Anil Seth (Utah), Charlie Conroy (Santa Cruz), Christopher Usher (Swinburne), Duncan Forbes (Swinburne), Giuseppina Fabbiano (CfA), Jacob Arnold (Santa Cruz), Jay Strader (Michigan St), Jean Brodie (Santa Cruz), Nelson Caldwell (CfA), Santa Cruz), Vincenzo Pota (Swinburne)

arxiv:1307.7707 v2 · 2013-07-29 · astro-ph.CO · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QJNDV5IQQ7RDUP2RYC6BGBSFNO}

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	2026-05-18T01:48:33.243392Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

825a3af51087e23a3f51c0bc1306456bac9867ff65867e6333ff9dced6a8a80a

Aliases

arxiv: 1307.7707 · arxiv_version: 1307.7707v2 · doi: 10.48550/arxiv.1307.7707 · pith_short_12: QJNDV5IQQ7RD · pith_short_16: QJNDV5IQQ7RDUP2R · pith_short_8: QJNDV5IQ

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/QJNDV5IQQ7RDUP2RYC6BGBSFNO \
  | 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: 825a3af51087e23a3f51c0bc1306456bac9867ff65867e6333ff9dced6a8a80a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7df94d8426fd4efc8587ec2a6a41f6a20ee36508b58e627004fa69a47894608b",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-07-29T20:00:00Z",
    "title_canon_sha256": "dceac57ff8770b36d3002f47f510877c4be6f15d8afcb179f2de22a353e91a91"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.7707",
    "kind": "arxiv",
    "version": 2
  }
}