Pith Number

pith:4SW7SXZG

pith:2000:4SW7SXZGCESKEJGOYTQTUH2ELO

not attested not anchored not stored refs pending

3C radio sources as they've never been seen before

Katherine Blundell (Oxford), Namir Kassim (NRL) & Rick Perley (NRAO)

arxiv:astro-ph/0004005 v1 · 2000-04-01 · 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{4SW7SXZGCESKEJGOYTQTUH2ELO}

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.

Cited by

1 paper in Pith

An Inverse-Compton-Boosted Cool Core Unifies Perseus's Radio and X-ray Halos

Receipt and verification

First computed	2026-07-04T14:10:16.312532Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4adf95f261124a224cec4e13a1f445babeaa8789afba72377faa066c5c95ef5

Aliases

arxiv: astro-ph/0004005 · arxiv_version: astro-ph/0004005v1 · doi: 10.48550/arxiv.astro-ph/0004005 · pith_short_12: 4SW7SXZGCESK · pith_short_16: 4SW7SXZGCESKEJGO · pith_short_8: 4SW7SXZG

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/4SW7SXZGCESKEJGOYTQTUH2ELO \
  | 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: e4adf95f261124a224cec4e13a1f445babeaa8789afba72377faa066c5c95ef5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "60575db9bcb47cf6df24139245615f86b9e0b1965276bc5a91ea9052b4f529d3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-04-01T17:05:47Z",
    "title_canon_sha256": "db739aa6dc3e97d185f5a3fcf6c525d02b327b7bf51c18e0fcbc0ccb0385f06b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0004005",
    "kind": "arxiv",
    "version": 1
  }
}