Pith Number

pith:4SFA7HYP

pith:2017:4SFA7HYPY5BQXFUXWKWWJ2QMOE

not attested not anchored not stored refs pending

Quenching of supermassive black hole growth around the apparent maximum mass

Kohei Ichikawa, Kohei Inayoshi

arxiv:1704.00729 v2 · 2017-04-03 · astro-ph.GA · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4SFA7HYPY5BQXFUXWKWWJ2QMOE}

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	2026-05-18T00:44:46.633271Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e48a0f9f0fc7430b9697b2ad64ea0c711fb062b51a33ba7a2b9615678529e091

Aliases

arxiv: 1704.00729 · arxiv_version: 1704.00729v2 · doi: 10.48550/arxiv.1704.00729 · pith_short_12: 4SFA7HYPY5BQ · pith_short_16: 4SFA7HYPY5BQXFUX · pith_short_8: 4SFA7HYP

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/4SFA7HYPY5BQXFUXWKWWJ2QMOE \
  | 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: e48a0f9f0fc7430b9697b2ad64ea0c711fb062b51a33ba7a2b9615678529e091

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be81415c0ce8470eb9788abb121369f86cee18e15c700f32842e0105b18a82b0",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-04-03T18:00:00Z",
    "title_canon_sha256": "acf7d0c971c449565f489bf12c06b3baa02da9b300b7a376d3089743014fd6c9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.00729",
    "kind": "arxiv",
    "version": 2
  }
}