Pith Number

pith:QPDNDDTY

pith:2011:QPDNDDTYWHQ56BW6JM3W5DGU6B

not attested not anchored not stored refs pending

Integral Field Spectroscopy of Massive, Kiloparsec-Scale Outflows in the Infrared-Luminous QSO Mrk 231

David S. N. Rupke (Rhodes College), Sylvain Veilleux (University of Maryland)

arxiv:1102.4349 v1 · 2011-02-21 · astro-ph.GA · 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{QPDNDDTYWHQ56BW6JM3W5DGU6B}

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	2026-05-18T03:29:48.703531Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83c6d18e78b1e1df06de4b376e8cd4f0402a5a6355c24393e684ef3538884a4b

Aliases

arxiv: 1102.4349 · arxiv_version: 1102.4349v1 · doi: 10.48550/arxiv.1102.4349 · pith_short_12: QPDNDDTYWHQ5 · pith_short_16: QPDNDDTYWHQ56BW6 · pith_short_8: QPDNDDTY

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/QPDNDDTYWHQ56BW6JM3W5DGU6B \
  | 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: 83c6d18e78b1e1df06de4b376e8cd4f0402a5a6355c24393e684ef3538884a4b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eaa071fd10e1d526b84ea688150e7379ee3035a2660f36471b7aa628028cb392",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-02-21T21:27:40Z",
    "title_canon_sha256": "a9c4cc2ce8f75baa24fd254f3192c47dc8e5f32092fe6e4968341dcf46be9788"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.4349",
    "kind": "arxiv",
    "version": 1
  }
}