Pith Number

pith:XROWLE2Q

pith:2007:XROWLE2QMT7AVQJFRICNU4FOLG

not attested not anchored not stored refs pending

Toward a New Geometric Distance to the Active Galaxy NGC4258: I. VLBI Monitoring of Water Maser Emission

A. L. Argon, E. M. L. Humphreys (Harvard-Smithsonian Center for Astrophysics), J. M. Moran, L. J. Greenhill, M. J. Reid

arxiv:astro-ph/0701396 v1 · 2007-01-12 · 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{XROWLE2QMT7AVQJFRICNU4FOLG}

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	2026-05-18T04:29:07.308972Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc5d65935064fe0ac1258a04da70ae598619006524384eb09ed61d37fa2d7fec

Aliases

arxiv: astro-ph/0701396 · arxiv_version: astro-ph/0701396v1 · doi: 10.48550/arxiv.astro-ph/0701396 · pith_short_12: XROWLE2QMT7A · pith_short_16: XROWLE2QMT7AVQJF · pith_short_8: XROWLE2Q

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/XROWLE2QMT7AVQJFRICNU4FOLG \
  | 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: bc5d65935064fe0ac1258a04da70ae598619006524384eb09ed61d37fa2d7fec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4fba1e7929ac2aa2b75a297dc35d4822983328f8271c9972a22bf8cfe7502b16",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-01-12T22:52:31Z",
    "title_canon_sha256": "e17bc7c817047d07b5f406cdaa14f487d0ce6daf0eac5dd940218851c5bf08da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0701396",
    "kind": "arxiv",
    "version": 1
  }
}