Pith Number

pith:DS5KJQ5X

pith:2002:DS5KJQ5X7RH5ZAOD5RMDYN3F6N

not attested not anchored not stored refs pending

Is there really a Black Hole at the center of NGC 4041? - Constraints from gas kinematics

A. Capetti, A. Marconi, C. Scarlata, D. Batcheldor, D.J. Axon, D. Macchetto, H. Ford, J. Atkinson, J. Binney, J. Gerssen, L. Dressel, M.A. Hughes, M. Carollo, M.R. Merrifield, M. Stiavelli, R.P. van der Marel, W. Maciejewski, W. Sparks, Z. Tsvetanov

arxiv:astro-ph/0211650 v1 · 2002-11-29 · 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{DS5KJQ5X7RH5ZAOD5RMDYN3F6N}

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	2026-07-04T16:31:20.011741Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1cbaa4c3b7fc4fdc81c3ec583c3765f34482f3f2d396e7dd147a0f97ce21e7fc

Aliases

arxiv: astro-ph/0211650 · arxiv_version: astro-ph/0211650v1 · doi: 10.48550/arxiv.astro-ph/0211650 · pith_short_12: DS5KJQ5X7RH5 · pith_short_16: DS5KJQ5X7RH5ZAOD · pith_short_8: DS5KJQ5X

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/DS5KJQ5X7RH5ZAOD5RMDYN3F6N \
  | 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: 1cbaa4c3b7fc4fdc81c3ec583c3765f34482f3f2d396e7dd147a0f97ce21e7fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84798c508464ea8b21c691770913a8a251e90ebb456b247c8d2e1aaba1fed4c3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-11-29T14:57:10Z",
    "title_canon_sha256": "0c1051ff9eef758ea784a5bc2181e11e569af879a629390c0f586d9c09a1768f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0211650",
    "kind": "arxiv",
    "version": 1
  }
}