Pith Number

pith:VAJJ7AAS

pith:2013:VAJJ7AASEXTTPVTTLK5JKL5OVB

not attested not anchored not stored refs pending

Spin and mass of the nearest supermassive black hole

Vyacheslav I. Dokuchaev

arxiv:1306.2033 v3 · 2013-06-09 · astro-ph.HE · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VAJJ7AASEXTTPVTTLK5JKL5OVB}

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	2026-05-18T02:32:31.715121Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8129f801225e737d6735aba952faea86b5003f48b771b86c740eb91f7a3e31b

Aliases

arxiv: 1306.2033 · arxiv_version: 1306.2033v3 · doi: 10.48550/arxiv.1306.2033 · pith_short_12: VAJJ7AASEXTT · pith_short_16: VAJJ7AASEXTTPVTT · pith_short_8: VAJJ7AAS

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/VAJJ7AASEXTTPVTTLK5JKL5OVB \
  | 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: a8129f801225e737d6735aba952faea86b5003f48b771b86c740eb91f7a3e31b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a41aa2b4f92ead3bdb0e95d2b05ec84b02f228f3332a5ba7a1e4fd895a4bf6a4",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-06-09T16:03:56Z",
    "title_canon_sha256": "d5f69209a298efcd2f6e4ef1a8ae8ef0a97f7f0a31bccf401b15fcfcc50a9fd0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.2033",
    "kind": "arxiv",
    "version": 3
  }
}