Pith Number

pith:D3YR4FB3

pith:2002:D3YR4FB3EUZG77HNUHC4LY4D5O

not attested not anchored not stored refs pending

The signature of high velocity gas in the spectra of NGC 4151

(2) Instituto Astronomico e Geofisico, Astronomy, Garching), M.A. Prieto (3) ((1) School of Physics, M. Contini (1), S.M. Viegas (2), Tel Aviv University, USP (3) European Southern Observatory

arxiv:astro-ph/0202146 v1 · 2002-02-07 · 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{D3YR4FB3EUZG77HNUHC4LY4D5O}

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	2026-07-04T16:29:22.566888Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ef11e143b25326ffceda1c5c5e383ebbcebd254892c3b8fab3227a272cfe29f

Aliases

arxiv: astro-ph/0202146 · arxiv_version: astro-ph/0202146v1 · doi: 10.48550/arxiv.astro-ph/0202146 · pith_short_12: D3YR4FB3EUZG · pith_short_16: D3YR4FB3EUZG77HN · pith_short_8: D3YR4FB3

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/D3YR4FB3EUZG77HNUHC4LY4D5O \
  | 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: 1ef11e143b25326ffceda1c5c5e383ebbcebd254892c3b8fab3227a272cfe29f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41923712cdb38134feb9c6c32af1b97a8879e859032d97c9a0371a093ddbc59d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-02-07T08:00:22Z",
    "title_canon_sha256": "d18633ad4bb7bff3bb1088430bbbdbf50d12bd331d5ff718cbb52ff1aa68902e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0202146",
    "kind": "arxiv",
    "version": 1
  }
}