Pith Number

pith:J4IEVCQA

pith:2002:J4IEVCQASXLVGW5PYINWDBAEV4

not attested not anchored not stored refs pending

VLBA Measurement of Nine Pulsar Parallaxes

John M. Benson (NRAO), S. E. Thorsett (UCSC), Walter F. Brisken (NRAO), W. M. Goss (NRAO)

arxiv:astro-ph/0204105 v1 · 2002-04-05 · 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{J4IEVCQASXLVGW5PYINWDBAEV4}

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	2026-05-18T01:40:43.025695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4f104a8a0095d7535bafc21b618404af11fd78383737c94837403a4286f8aa81

Aliases

arxiv: astro-ph/0204105 · arxiv_version: astro-ph/0204105v1 · doi: 10.48550/arxiv.astro-ph/0204105 · pith_short_12: J4IEVCQASXLV · pith_short_16: J4IEVCQASXLVGW5P · pith_short_8: J4IEVCQA

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/J4IEVCQASXLVGW5PYINWDBAEV4 \
  | 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: 4f104a8a0095d7535bafc21b618404af11fd78383737c94837403a4286f8aa81

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf0d7691e3fd95759626cd7028e92193dbbab7a5016e9626d8bd7c39b4ef829c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-04-05T18:43:46Z",
    "title_canon_sha256": "78759a9cb75a09ae213e19bbc415b452aa0282cf8da9ba454f7661e609f3b8fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0204105",
    "kind": "arxiv",
    "version": 1
  }
}