Pith Number

pith:44E4PHUI

pith:2009:44E4PHUIFDJM5XOO3RZNADJJVH

not attested not anchored not stored refs pending

The active nuclei of z<1.0 3CRR radio sources

D. A. Evans, J. H. Croston, M. J. Hardcastle

arxiv:0904.1323 v1 · 2009-04-08 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{44E4PHUIFDJM5XOO3RZNADJJVH}

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	2026-05-18T02:14:06.930728Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e709c79e8828d2ceddcedc72d00d29a9e2b3748fd0655f66719d01f37bb26c7f

Aliases

arxiv: 0904.1323 · arxiv_version: 0904.1323v1 · doi: 10.48550/arxiv.0904.1323 · pith_short_12: 44E4PHUIFDJM · pith_short_16: 44E4PHUIFDJM5XOO · pith_short_8: 44E4PHUI

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/44E4PHUIFDJM5XOO3RZNADJJVH \
  | 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: e709c79e8828d2ceddcedc72d00d29a9e2b3748fd0655f66719d01f37bb26c7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d54c5e91737bee1f26d720fb809043365d4e7769701151b2272b0decf977dd3",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-04-08T12:37:32Z",
    "title_canon_sha256": "acb75a2a748ad2833d787ac5fb8acb8d35177de48bbc5a168dbbecb360db7dab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.1323",
    "kind": "arxiv",
    "version": 1
  }
}