Pith Number

pith:7ZMFOJMH

pith:1998:7ZMFOJMH4B4KXWLLQND7P42COC

not attested not anchored not stored refs pending

Updated Estimates of Global Cosmological Parameters Determined Using Classical Double Radio Galaxies

Erick J. Guerra, Lin Wan (Princeton, Physics), Ruth A. Daly

arxiv:astro-ph/9807249 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{7ZMFOJMH4B4KXWLLQND7P42COC}

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	2026-05-18T01:40:13.851451Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe58572587e078abd96b8347f7f3427098bcd01d644a793901476cb3bc6125bf

Aliases

arxiv: astro-ph/9807249 · arxiv_version: astro-ph/9807249v1 · doi: 10.48550/arxiv.astro-ph/9807249 · pith_short_12: 7ZMFOJMH4B4K · pith_short_16: 7ZMFOJMH4B4KXWLL · pith_short_8: 7ZMFOJMH

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/7ZMFOJMH4B4KXWLLQND7P42COC \
  | 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: fe58572587e078abd96b8347f7f3427098bcd01d644a793901476cb3bc6125bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "442f7010f0c7354cb6c4496afc06529b972bfbbe0171d9b1e39883e7fa6ecc76",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-07-23T23:08:39Z",
    "title_canon_sha256": "962e06ab075029d0f1f9210fc387c285d3b44a5b8c35a0f9ec70da5b821d54fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9807249",
    "kind": "arxiv",
    "version": 1
  }
}