Pith Number

pith:LUE3ZA4Y

pith:2004:LUE3ZA4YJEF6ZXWEOG33FL7XRT

not attested not anchored not stored refs pending

Was the Narrow Line Seyfert 1 RGB J0044+193 ever radio loud?

Cambridge), G.G. Pooley (Mullard Radio Astronomy Laboratory, J.C.A. Miller-Jones (Amsterdam), R.P. Fender (Southampton & Amsterdam), T.J. Maccarone (Amsterdam)

arxiv:astro-ph/0412414 v1 · 2004-12-16 · 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{LUE3ZA4YJEF6ZXWEOG33FL7XRT}

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	2026-07-04T16:45:25.842107Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5d09bc8398490becdec471b7b2aff78ce77b52a4f6ee7b09ed5c5cebe1def0f3

Aliases

arxiv: astro-ph/0412414 · arxiv_version: astro-ph/0412414v1 · doi: 10.48550/arxiv.astro-ph/0412414 · pith_short_12: LUE3ZA4YJEF6 · pith_short_16: LUE3ZA4YJEF6ZXWE · pith_short_8: LUE3ZA4Y

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/LUE3ZA4YJEF6ZXWEOG33FL7XRT \
  | 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: 5d09bc8398490becdec471b7b2aff78ce77b52a4f6ee7b09ed5c5cebe1def0f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7e3b52fc31cc28e27b6e1c4be26e1ce363caf12e88205f33e46793a59eecdee",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-12-16T12:50:42Z",
    "title_canon_sha256": "6efb8cd44c116973ae194bc6a2d815886babf6b7b824fd28a6e8bd8a2d9e655c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0412414",
    "kind": "arxiv",
    "version": 1
  }
}