Pith Number

pith:ER4VWMLK

pith:1997:ER4VWMLK5BBBLFQY3HCDNP53D7

not attested not anchored not stored refs pending

On the Keplerian Rotation Curves of Galaxies

Mareki Honma, University of Tokyo), Yoshiaki Sofue (Institute of Astronomy

arxiv:astro-ph/9709217 v1 · 1997-09-23 · 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{ER4VWMLK5BBBLFQY3HCDNP53D7}

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	2026-05-18T01:40:16.726787Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24795b316ae842159618d9c436bfbb1fcd2f2a43a319af24d2537d1af66ae588

Aliases

arxiv: astro-ph/9709217 · arxiv_version: astro-ph/9709217v1 · doi: 10.48550/arxiv.astro-ph/9709217 · pith_short_12: ER4VWMLK5BBB · pith_short_16: ER4VWMLK5BBBLFQY · pith_short_8: ER4VWMLK

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/ER4VWMLK5BBBLFQY3HCDNP53D7 \
  | 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: 24795b316ae842159618d9c436bfbb1fcd2f2a43a319af24d2537d1af66ae588

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b08a330876e752b6cbdc4ae4dccd5c333871022e152c80a851f57be5bb807dc4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-09-23T07:26:03Z",
    "title_canon_sha256": "5d2a53a8032996c33710eccbc72c9317bfdf6c73453e43ff3ea1d1e98d55e65e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9709217",
    "kind": "arxiv",
    "version": 1
  }
}