Pith Number

pith:A7XQ6S7F

pith:2013:A7XQ6S7FKPCVJEHD4JYC2WZPW4

not attested not anchored not stored refs pending

Rehabilitating CIV-based black hole mass estimates in quasars

J. C. Runnoe, M. A. DiPompeo, M. S. Brotherton, Zhaohui Shang

arxiv:1306.3521 v1 · 2013-06-14 · 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{A7XQ6S7FKPCVJEHD4JYC2WZPW4}

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	2026-05-18T01:49:16.712299Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07ef0f4be553c55490e3e2702d5b2fb715413dc36c3f7886d3c71308cfd0bd0d

Aliases

arxiv: 1306.3521 · arxiv_version: 1306.3521v1 · doi: 10.48550/arxiv.1306.3521 · pith_short_12: A7XQ6S7FKPCV · pith_short_16: A7XQ6S7FKPCVJEHD · pith_short_8: A7XQ6S7F

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/A7XQ6S7FKPCVJEHD4JYC2WZPW4 \
  | 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: 07ef0f4be553c55490e3e2702d5b2fb715413dc36c3f7886d3c71308cfd0bd0d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d69fd895fe86ff8616821e78adc812c23f71439480abca8306f36b87d2e4e9b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-06-14T21:45:43Z",
    "title_canon_sha256": "2aed2a0da2a06b7b35acb8cd8186f7ae7baa887b61bea55f4c262e22766dead6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.3521",
    "kind": "arxiv",
    "version": 1
  }
}