Pith Number

pith:4J646F4Z

pith:2019:4J646F4ZSZ4TISC4SDNCEVOH2J

not attested not anchored not stored refs pending

Galaxies and Supermassive Black Holes at z <= 0.1: The Velocity Dispersion Function

Alison Crocker, Farhanul Hasan

arxiv:1904.00486 v1 · 2019-03-31 · 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{4J646F4ZSZ4TISC4SDNCEVOH2J}

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	2026-05-17T23:49:48.305655Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e27dcf1799967934485c90da2255c7d26cf517b8929069759f2750d9fbf05684

Aliases

arxiv: 1904.00486 · arxiv_version: 1904.00486v1 · doi: 10.48550/arxiv.1904.00486 · pith_short_12: 4J646F4ZSZ4T · pith_short_16: 4J646F4ZSZ4TISC4 · pith_short_8: 4J646F4Z

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/4J646F4ZSZ4TISC4SDNCEVOH2J \
  | 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: e27dcf1799967934485c90da2255c7d26cf517b8929069759f2750d9fbf05684

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a1b9cc18f765083b9b6aad6961af3267902384a90dd93ee656a5b6f8af71830f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-03-31T21:19:35Z",
    "title_canon_sha256": "6180e1d99e8b0e775809dbda2184187d7fa316175c9702b099efda211e0d11c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.00486",
    "kind": "arxiv",
    "version": 1
  }
}