Pith Number

pith:SS4AK24F

pith:2001:SS4AK24FRRZPNRPQBW4PEOTIT7

not attested not anchored not stored refs pending

The black hole mass of BL Lacs from stellar velocity dispersion of the host galaxy

Aldo Treves, Jari Kotilainen, Renato Falomo

arxiv:astro-ph/0112423 v1 · 2001-12-18 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SS4AK24FRRZPNRPQBW4PEOTIT7}

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	2026-05-18T01:23:39.439676Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

94b8056b858c72f6c5f00db8f23a689fc04d8acea015ce2220ae2b761b6bb6f3

Aliases

arxiv: astro-ph/0112423 · arxiv_version: astro-ph/0112423v1 · doi: 10.48550/arxiv.astro-ph/0112423 · pith_short_12: SS4AK24FRRZP · pith_short_16: SS4AK24FRRZPNRPQ · pith_short_8: SS4AK24F

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/SS4AK24FRRZPNRPQBW4PEOTIT7 \
  | 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: 94b8056b858c72f6c5f00db8f23a689fc04d8acea015ce2220ae2b761b6bb6f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "37843ab5970b5afc00243f0998b6d8e1c71b7bcdddeb5d07ca114a6368ea9573",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-12-18T12:45:23Z",
    "title_canon_sha256": "531c31ee9c5b5339216e8b612de070eea645576683af0a3c08bf79ef3d714fcd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0112423",
    "kind": "arxiv",
    "version": 1
  }
}