Pith Number

pith:PP4HILL2

pith:1998:PP4HILL2EMNJAH2JEBQ37TOLAQ

not attested not anchored not stored refs pending

The nature of the optical---radio correlations for powerful radio galaxies

A. Robinson, C.N. Tadhunter, M. Villar-Martin & R.A.E. Fosbury, R. Dickson, R. Morganti

arxiv:astro-ph/9807238 v1 · 1998-07-23 · 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{PP4HILL2EMNJAH2JEBQ37TOLAQ}

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	2026-07-04T16:06:52.382377Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bf8742d7a231a901f492061bfcdcb0436b9d0e7457408eb208bb681181b9641

Aliases

arxiv: astro-ph/9807238 · arxiv_version: astro-ph/9807238v1 · doi: 10.48550/arxiv.astro-ph/9807238 · pith_short_12: PP4HILL2EMNJ · pith_short_16: PP4HILL2EMNJAH2J · pith_short_8: PP4HILL2

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/PP4HILL2EMNJAH2JEBQ37TOLAQ \
  | 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: 7bf8742d7a231a901f492061bfcdcb0436b9d0e7457408eb208bb681181b9641

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6be76a18929c44eb6b92d7bf8e5744fab99d65958ac9d8ef612f5740534a3f61",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-07-23T11:36:01Z",
    "title_canon_sha256": "fb9ba09c725dc168ce456d42c8357f9cb96566033702ab176378107ed6ac76cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9807238",
    "kind": "arxiv",
    "version": 1
  }
}