Pith Number

pith:YQJYWYYJ

pith:2010:YQJYWYYJRBKV22HNFJDV3GWCA2

not attested not anchored not stored refs pending

Radio observations of NGC 6388: an upper limit on the mass of its central black hole

A. Tzioumis, B. Lanzoni, D. Cseh, E. Kording, M. Coriat, P. Kaaret, S. Corbel

arxiv:1003.4604 v1 · 2010-03-24 · astro-ph.HE · 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{YQJYWYYJRBKV22HNFJDV3GWCA2}

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	2026-05-18T02:24:26.916850Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4138b630988555d68ed2a475d9ac2069b43dbb2179cc8299073b82342ecafa5

Aliases

arxiv: 1003.4604 · arxiv_version: 1003.4604v1 · doi: 10.48550/arxiv.1003.4604 · pith_short_12: YQJYWYYJRBKV · pith_short_16: YQJYWYYJRBKV22HN · pith_short_8: YQJYWYYJ

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/YQJYWYYJRBKV22HNFJDV3GWCA2 \
  | 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: c4138b630988555d68ed2a475d9ac2069b43dbb2179cc8299073b82342ecafa5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c12a150d7f2171df877f5ec98d1049977f2ec4b5de5e0b569d9858e41ecf8d59",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2010-03-24T10:15:03Z",
    "title_canon_sha256": "d83c4b0c5ce1d4db7379da462313b46ff2c41c431863f242318b8b4d2de04d1b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.4604",
    "kind": "arxiv",
    "version": 1
  }
}