Pith Number

pith:KYPZIEHB

pith:2000:KYPZIEHBSBJXAXF2IVNGKRODK7

not attested not anchored not stored refs pending

The "Swiss cheese" cosmological model has no extrinsic curvature discontinuity: A comment on the paper by G.A. Baker, Jr. (astro-ph/0003152)

Charles C. Dyer, Chris Oliwa

arxiv:astro-ph/0004090 v1 · 2000-04-06 · astro-ph · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KYPZIEHBSBJXAXF2IVNGKRODK7}

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	2026-07-04T14:10:16.809607Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

561f9410e19053705cba455a6545c357f40f88a2cb9cb54bc99f15378277c70e

Aliases

arxiv: astro-ph/0004090 · arxiv_version: astro-ph/0004090v1 · doi: 10.48550/arxiv.astro-ph/0004090 · pith_short_12: KYPZIEHBSBJX · pith_short_16: KYPZIEHBSBJXAXF2 · pith_short_8: KYPZIEHB

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/KYPZIEHBSBJXAXF2IVNGKRODK7 \
  | 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: 561f9410e19053705cba455a6545c357f40f88a2cb9cb54bc99f15378277c70e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13e3eb1930908b3188f5f5d52d12cd34bb61747fb60ccee4952e332ec1414cf9",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-04-06T17:13:36Z",
    "title_canon_sha256": "f03e8fe6fac5240a246d11652f553118a0c84b11077323f179af52dd25c8971e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0004090",
    "kind": "arxiv",
    "version": 1
  }
}