Pith Number

pith:Y3D3IQN2

pith:2020:Y3D3IQN2K5MB7KCV3IHAT66H3I

not attested not anchored not stored refs pending

The supermassive black hole masses of reverberation-mapped active galactic nuclei

Bing-Qian Zhu, Bi-Xuan Zhao, Chan Wang, Li-Ming Yu, Wei-Hao Bian, Xue Ge, Xue-Guang Zhang, Yu-Qin Chen

arxiv:2008.06623 v1 · 2020-08-15 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y3D3IQN2K5MB7KCV3IHAT66H3I}

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	2026-07-05T01:40:41.569401Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6c7b441ba57581fa855da0e09fbc7da23efade119795d07db10f449a09f158a

Aliases

arxiv: 2008.06623 · arxiv_version: 2008.06623v1 · doi: 10.48550/arxiv.2008.06623 · pith_short_12: Y3D3IQN2K5MB · pith_short_16: Y3D3IQN2K5MB7KCV · pith_short_8: Y3D3IQN2

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/Y3D3IQN2K5MB7KCV3IHAT66H3I \
  | 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: c6c7b441ba57581fa855da0e09fbc7da23efade119795d07db10f449a09f158a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7f79d47f2d2f87fa1cb24faa2878cc91e739136e46ff1863cab8bfa139ba853",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-08-15T01:46:50Z",
    "title_canon_sha256": "9a6d4b0763d60555ed4bd84d06e4e05df309517146b0a4a27485e5951ef81ff8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2008.06623",
    "kind": "arxiv",
    "version": 1
  }
}