Pith Number

pith:VYJKQDOH

pith:2018:VYJKQDOHSCSPMM5WRXP5GSP3EY

not attested not anchored not stored refs pending

Science with an ngVLA: Local Constraints on Supermassive Black Hole Seeds

A. E. Reines (Montana State), R. M. Plotkin (ICRAR-Curtin)

arxiv:1810.06814 v1 · 2018-10-16 · 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{VYJKQDOHSCSPMM5WRXP5GSP3EY}

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.

Cited by

1 paper in Pith

Radio Signatures of a Massive Black Hole in GHZ9 at z $\sim$ 10

Receipt and verification

First computed	2026-05-18T00:03:11.482841Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae12a80dc790a4f633b68ddfd349fb26198767bee4f2b6f831dcaafc92c29ac7

Aliases

arxiv: 1810.06814 · arxiv_version: 1810.06814v1 · doi: 10.48550/arxiv.1810.06814 · pith_short_12: VYJKQDOHSCSP · pith_short_16: VYJKQDOHSCSPMM5W · pith_short_8: VYJKQDOH

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/VYJKQDOHSCSPMM5WRXP5GSP3EY \
  | 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: ae12a80dc790a4f633b68ddfd349fb26198767bee4f2b6f831dcaafc92c29ac7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ee9aae00f8f131e4be3fd03ccb05b2f16568c74b463d121b80ace73e946c769",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-10-16T05:25:53Z",
    "title_canon_sha256": "cd8c138c30d0833579119b8c31fc3577bbd5c9318642530cbb546c242ab54426"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.06814",
    "kind": "arxiv",
    "version": 1
  }
}