Pith Number

pith:DGNLXX5E

pith:1998:DGNLXX5EOO2PKWZIRKILGQJ5PE

not attested not anchored not stored refs pending

VLA Observations of the giant Radio Galaxy 3C 449

G. Giovannini, H. Andernach, L. Feretti, R. Perley

arxiv:astro-ph/9810305 v1 · 1998-10-20 · 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{DGNLXX5EOO2PKWZIRKILGQJ5PE}

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	2026-05-18T01:07:36.982434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

199abbdfa473b4f55b288a90b3413d7913521633be4900704007840cfc095268

Aliases

arxiv: astro-ph/9810305 · arxiv_version: astro-ph/9810305v1 · doi: 10.48550/arxiv.astro-ph/9810305 · pith_short_12: DGNLXX5EOO2P · pith_short_16: DGNLXX5EOO2PKWZI · pith_short_8: DGNLXX5E

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/DGNLXX5EOO2PKWZIRKILGQJ5PE \
  | 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: 199abbdfa473b4f55b288a90b3413d7913521633be4900704007840cfc095268

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1fb5b8f56e2752c8aaba04e5dfbab6e76c30b6ccfd58e3e613f16b379bec34db",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-10-20T09:12:28Z",
    "title_canon_sha256": "428543230029a6c69b2ffc641fc35cc67f850963a77ba7515694450124df9b44"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9810305",
    "kind": "arxiv",
    "version": 1
  }
}