Pith Number

pith:QFGL64LL

pith:2002:QFGL64LLN3HZT67W57NAJQKXYT

not attested not anchored not stored refs pending

Observational constraints on growth of massive black holes

Qingjuan Yu, Scott Tremaine

arxiv:astro-ph/0203082 v2 · 2002-03-06 · 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{QFGL64LLN3HZT67W57NAJQKXYT}

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.

Cited by

2 papers in Pith

Clustering of high-redshift quasars with DESI DR2

A Jet from a Nearly Dormant Black Hole

Receipt and verification

First computed	2026-07-04T15:17:59.382173Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

814cbf716b6ecf99fbf6efda04c157c4e3e72b3e58d3571669087b8d35794de3

Aliases

arxiv: astro-ph/0203082 · arxiv_version: astro-ph/0203082v2 · doi: 10.48550/arxiv.astro-ph/0203082 · pith_short_12: QFGL64LLN3HZ · pith_short_16: QFGL64LLN3HZT67W · pith_short_8: QFGL64LL

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/QFGL64LLN3HZT67W57NAJQKXYT \
  | 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: 814cbf716b6ecf99fbf6efda04c157c4e3e72b3e58d3571669087b8d35794de3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c176e3f0ad78561cbd37ca0f7e5086162f5f05fb5619b13c03d533e0df9532d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-03-06T15:50:30Z",
    "title_canon_sha256": "8c5b93a6b4d752c980e6871b373c776e5dcf2123e5f92d260e41fd0378f43ada"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0203082",
    "kind": "arxiv",
    "version": 2
  }
}