Pith Number

pith:VRMRRHMW

pith:2000:VRMRRHMWA3FM5M7KLNZUSHUG4K

not attested not anchored not stored refs pending

VLBA Observations Of A Sample Of Nearby FR I Radio Galaxies

Christopher P. O'Dea, Chun Xu, J.J. Condon, J.M. Wrobel, Stefi A. Baum

arxiv:astro-ph/0009124 v1 · 2000-09-07 · 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{VRMRRHMWA3FM5M7KLNZUSHUG4K}

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	2026-07-04T16:17:07.766805Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac59189d9606caceb3ea5b73491e86e29657374e27696392ca3b3a5dfad4a5e0

Aliases

arxiv: astro-ph/0009124 · arxiv_version: astro-ph/0009124v1 · doi: 10.48550/arxiv.astro-ph/0009124 · pith_short_12: VRMRRHMWA3FM · pith_short_16: VRMRRHMWA3FM5M7K · pith_short_8: VRMRRHMW

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/VRMRRHMWA3FM5M7KLNZUSHUG4K \
  | 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: ac59189d9606caceb3ea5b73491e86e29657374e27696392ca3b3a5dfad4a5e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb426f941f93b48f016e8e4b4aa925bc4eeaa8a8c35b87cd69cf46b754b05a16",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-09-07T22:30:07Z",
    "title_canon_sha256": "ddafffd2dc3c1a3bffa186c2f41b5a8c5495d517390b41706abab19c10d130ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0009124",
    "kind": "arxiv",
    "version": 1
  }
}