Pith Number

pith:YNJZSYUH

pith:2007:YNJZSYUHCK5IEDJE5S34FHXGEW

not attested not anchored not stored refs pending

Comparing and calibrating black hole mass estimators for distant active galactic nuclei

Jong-Hak Woo, Kathryn L. McGill, Matthew A. Malkan, Tommaso Treu

arxiv:0710.1839 v2 · 2007-10-09 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YNJZSYUHCK5IEDJE5S34FHXGEW}

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	2026-05-18T04:26:00.674309Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c35399628712ba820d24ecb7c29ee6259fbaf60c36e3ce932ea2c7a8b45be991

Aliases

arxiv: 0710.1839 · arxiv_version: 0710.1839v2 · doi: 10.48550/arxiv.0710.1839 · pith_short_12: YNJZSYUHCK5I · pith_short_16: YNJZSYUHCK5IEDJE · pith_short_8: YNJZSYUH

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/YNJZSYUHCK5IEDJE5S34FHXGEW \
  | 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: c35399628712ba820d24ecb7c29ee6259fbaf60c36e3ce932ea2c7a8b45be991

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c79acc010ca043079285170ed074f17079b6c4f662f243c1115533e56a86b77",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-10-09T19:53:03Z",
    "title_canon_sha256": "daec23b80464edf457423f3fb0fc53671366afcabf59ba3825334300a99bc9c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0710.1839",
    "kind": "arxiv",
    "version": 2
  }
}