Pith Number

pith:ZZ6LU2HL

pith:2006:ZZ6LU2HLCEIUBXY4B55PPCYDPD

not attested not anchored not stored refs pending

3C 216: A Powerful FRII Seyfert 1 Galaxy

Brian Punsly

arxiv:astro-ph/0609204 v2 · 2006-09-07 · 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{ZZ6LU2HLCEIUBXY4B55PPCYDPD}

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	2026-05-18T04:28:57.837138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce7cba68eb111140df1c0f7af78b0378d82759f87ec959228e8fa3de04dbdecf

Aliases

arxiv: astro-ph/0609204 · arxiv_version: astro-ph/0609204v2 · doi: 10.48550/arxiv.astro-ph/0609204 · pith_short_12: ZZ6LU2HLCEIU · pith_short_16: ZZ6LU2HLCEIUBXY4 · pith_short_8: ZZ6LU2HL

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/ZZ6LU2HLCEIUBXY4B55PPCYDPD \
  | 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: ce7cba68eb111140df1c0f7af78b0378d82759f87ec959228e8fa3de04dbdecf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "922d0e9d587f2f4fa1ce9a6a740ef9895a9090e8dfb2557dae38a1400737dd99",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-09-07T16:39:20Z",
    "title_canon_sha256": "0fdef4e42903e18b540ac6838e5b3feee04eaa2707fedbc48c84936280b97d8f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0609204",
    "kind": "arxiv",
    "version": 2
  }
}