Pith Number

pith:EVHFPAOB

pith:2010:EVHFPAOBSAD55L63POBFNWKNEK

not attested not anchored not stored refs pending

Dynamical Black Hole Masses of BL Lac Objects from the Sloan Digital Sky Survey

(2) Kapteyn Astronomical Institute, (3) U. Washington), Richard M. Plotkin (1), Scott C. Trager (2), Scott F. Anderson (3) ((1) U. Amsterdam, Sera Markoff (1), U. Groningen

arxiv:1012.1601 v1 · 2010-12-07 · 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{EVHFPAOBSAD55L63POBFNWKNEK}

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	2026-05-18T02:04:31.939419Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

254e5781c19007deafdb7b8256d94d2281d36740e3e5304fce314a4ca42e7d4d

Aliases

arxiv: 1012.1601 · arxiv_version: 1012.1601v1 · doi: 10.48550/arxiv.1012.1601 · pith_short_12: EVHFPAOBSAD5 · pith_short_16: EVHFPAOBSAD55L63 · pith_short_8: EVHFPAOB

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/EVHFPAOBSAD55L63POBFNWKNEK \
  | 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: 254e5781c19007deafdb7b8256d94d2281d36740e3e5304fce314a4ca42e7d4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12acdd1f7d81bf20e20ebbc782fc7ba95c95caa853d1afed43c8e255220b2c04",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-12-07T21:00:02Z",
    "title_canon_sha256": "b4d9b48419770bdb3dac0b1666cf32cc6b1057e600f52840cb5d9c1e100ab3fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1012.1601",
    "kind": "arxiv",
    "version": 1
  }
}