Pith Number

pith:P6WBWLAU

pith:2009:P6WBWLAUA5EGN6UHXKGPTGIF3D

not attested not anchored not stored refs pending

Giant Radio Galaxies - old long-living quasars?

B. V. Komberg, I.N. Pashchenko

arxiv:0901.3721 v1 · 2009-01-23 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P6WBWLAUA5EGN6UHXKGPTGIF3D}

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	2026-05-18T02:14:56.099611Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7fac1b2c14074866fa87ba8cf99905d8d9d38eebcaf6c3588b3c74914f95e445

Aliases

arxiv: 0901.3721 · arxiv_version: 0901.3721v1 · doi: 10.48550/arxiv.0901.3721 · pith_short_12: P6WBWLAUA5EG · pith_short_16: P6WBWLAUA5EGN6UH · pith_short_8: P6WBWLAU

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/P6WBWLAUA5EGN6UHXKGPTGIF3D \
  | 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: 7fac1b2c14074866fa87ba8cf99905d8d9d38eebcaf6c3588b3c74914f95e445

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8863ce514e101b7d4b8a9b811ef24217c1195629d398a9d42612769c31e21c53",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-01-23T16:42:36Z",
    "title_canon_sha256": "c4d34b4bfab5d7a7b2204488228e80091c67b5f13cfb3cc99ceb6ee5adad6a1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.3721",
    "kind": "arxiv",
    "version": 1
  }
}