Pith Number

pith:COGVLNVY

pith:2009:COGVLNVYZJSOQ7ZURC52THXQEM

not attested not anchored not stored refs pending

Estimating Black Hole Masses in Triaxial Galaxies

2), (2) Sterrewacht Leiden, 3) ((1) McDonald Observatory, (3) ESO), P. Tim de Zeeuw (2, Remco C. E. van den Bosch (1

arxiv:0910.0844 v1 · 2009-10-05 · astro-ph.CO · 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{COGVLNVYZJSOQ7ZURC52THXQEM}

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	2026-05-18T03:57:37.513235Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

138d55b6b8ca64e87f3488bba99ef0232f28a35433f87b88ae79728c943b25d3

Aliases

arxiv: 0910.0844 · arxiv_version: 0910.0844v1 · doi: 10.48550/arxiv.0910.0844 · pith_short_12: COGVLNVYZJSO · pith_short_16: COGVLNVYZJSOQ7ZU · pith_short_8: COGVLNVY

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/COGVLNVYZJSOQ7ZURC52THXQEM \
  | 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: 138d55b6b8ca64e87f3488bba99ef0232f28a35433f87b88ae79728c943b25d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8d4200119cb351c8310675847a6430c21721fa238a85990750bde270b2740a1",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-05T20:02:09Z",
    "title_canon_sha256": "c74010c73603304ec85369460cba083ba328572829250c9f0bfa8145c160af1f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.0844",
    "kind": "arxiv",
    "version": 1
  }
}