Pith Number

pith:5JQQ6YOG

pith:2011:5JQQ6YOG5VPCAVM67XBSJR7K7P

not attested not anchored not stored refs pending

BLR Physical Conditions in Extreme Population A Quasars: a Method to Estimate Central Black Hole Mass at High Redshift

(2) Osservatorio Astronomico di Padova, (3) Instituto de Astrofisica de Andalucia), Alenka Negrete (1), Deborah Dultzin (1), Jack Sulentic (3) ((1) Instituto de Astronomia - Universidad Nacional Autonoma de Mexico, Paola Marziani (2)

arxiv:1107.3188 v2 · 2011-07-16 · 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{5JQQ6YOG5VPCAVM67XBSJR7K7P}

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	2026-05-18T02:01:15.912759Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ea610f61c6ed5e20559efdc324c7eafbd6fce674ac2fe5bb42e14eeadb193005

Aliases

arxiv: 1107.3188 · arxiv_version: 1107.3188v2 · doi: 10.48550/arxiv.1107.3188 · pith_short_12: 5JQQ6YOG5VPC · pith_short_16: 5JQQ6YOG5VPCAVM6 · pith_short_8: 5JQQ6YOG

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/5JQQ6YOG5VPCAVM67XBSJR7K7P \
  | 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: ea610f61c6ed5e20559efdc324c7eafbd6fce674ac2fe5bb42e14eeadb193005

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6cfc0cd6a0163713364a4ed5a5bc05d900996e740c1a2a2c9361d86e06e40b29",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-07-16T00:36:16Z",
    "title_canon_sha256": "187086f214152b33ab4fe4e3128744cadabe4381dbfa85071541f9a5c9a95745"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.3188",
    "kind": "arxiv",
    "version": 2
  }
}