Pith Number

pith:DDWLLIGZ

pith:2010:DDWLLIGZEE5ND4NXRV7XQDHY7G

not attested not anchored not stored refs pending

Quasar Radio-Loudness and the Elliptical Core Problem

Timothy S. Hamilton

arxiv:1006.0128 v1 · 2010-06-01 · 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{DDWLLIGZEE5ND4NXRV7XQDHY7G}

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	2026-05-18T04:27:45.324485Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18ecb5a0d9213ad1f1b78d7f780cf8f9a0378527c1d15ae196ec30963150b632

Aliases

arxiv: 1006.0128 · arxiv_version: 1006.0128v1 · doi: 10.48550/arxiv.1006.0128 · pith_short_12: DDWLLIGZEE5N · pith_short_16: DDWLLIGZEE5ND4NX · pith_short_8: DDWLLIGZ

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/DDWLLIGZEE5ND4NXRV7XQDHY7G \
  | 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: 18ecb5a0d9213ad1f1b78d7f780cf8f9a0378527c1d15ae196ec30963150b632

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22547ed1f729c72659fbef720a781372747fa7bea989511821ba3a3f5985b148",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-06-01T13:27:29Z",
    "title_canon_sha256": "6d7ef4c718a0a4b9e97a47f9e36a1cb7509c2eaab3e62aa29d56ca35df2d8954"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1006.0128",
    "kind": "arxiv",
    "version": 1
  }
}