Pith Number

pith:NLF4FXV5

pith:2007:NLF4FXV5NCIMBY4R3K47ROCZAA

not attested not anchored not stored refs pending

Modeling Non-Circular Motions in Disk Galaxies: Application to NGC 2976

J. A. Sellwood (Rutgers), Kristine Spekkens (NRAO/Rutgers)

arxiv:astro-ph/0703688 v2 · 2007-03-27 · 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{NLF4FXV5NCIMBY4R3K47ROCZAA}

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	2026-05-18T04:29:05.382490Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6acbc2debd6890c0e391dab9f8b85900202a212b1b7b3209228484d5e356ba66

Aliases

arxiv: astro-ph/0703688 · arxiv_version: astro-ph/0703688v2 · doi: 10.48550/arxiv.astro-ph/0703688 · pith_short_12: NLF4FXV5NCIM · pith_short_16: NLF4FXV5NCIMBY4R · pith_short_8: NLF4FXV5

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/NLF4FXV5NCIMBY4R3K47ROCZAA \
  | 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: 6acbc2debd6890c0e391dab9f8b85900202a212b1b7b3209228484d5e356ba66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed604ff424da387ab4a3d9a44743fa734e566ece7b4cbb3347676cde55024c0f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-03-27T14:47:51Z",
    "title_canon_sha256": "1527f546425d3e664d882f9fbb6b8d7af2018bcce41a4293984fc3e2a03b6369"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0703688",
    "kind": "arxiv",
    "version": 2
  }
}