Pith Number

pith:HPIEKV7X

pith:2013:HPIEKV7XBQMM625OVBIQWGJZD2

not attested not anchored not stored refs pending

Calibrating CIV-based black hole mass estimators

Daeseong Park, Jaejin Shin, Jong-Hak Woo, Kelly Denney

arxiv:1304.7281 v2 · 2013-04-26 · 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{HPIEKV7XBQMM625OVBIQWGJZD2}

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	2026-05-18T01:50:21.186280Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3bd04557f70c18cf6baea8510b19391eb2813e0db29fd6f1818d24eb6d79f9b6

Aliases

arxiv: 1304.7281 · arxiv_version: 1304.7281v2 · doi: 10.48550/arxiv.1304.7281 · pith_short_12: HPIEKV7XBQMM · pith_short_16: HPIEKV7XBQMM625O · pith_short_8: HPIEKV7X

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/HPIEKV7XBQMM625OVBIQWGJZD2 \
  | 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: 3bd04557f70c18cf6baea8510b19391eb2813e0db29fd6f1818d24eb6d79f9b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea8beed6f36385ad4083ff0755260f7d3cb982f377fc96ae9db118148d009b23",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-04-26T20:35:47Z",
    "title_canon_sha256": "7c1cd1d781faa405cd71502d1365fefe01116bf537fbfb52cb315ec16a4323a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.7281",
    "kind": "arxiv",
    "version": 2
  }
}