Pith Number

pith:QRTZ2WSO

pith:2018:QRTZ2WSO5BWFBXMX6ZGOPQTIO3

not attested not anchored not stored refs pending

The Maximum Angular-Diameter Distance in Cosmology

Fulvio Melia, Manoj K. Yennapureddy

arxiv:1807.07548 v2 · 2018-07-19 · astro-ph.CO · astro-ph.HE · hep-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{QRTZ2WSO5BWFBXMX6ZGOPQTIO3}

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	2026-05-18T00:05:30.332391Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84679d5a4ee86c50dd97f64ce7c26876ea1d11c597fa34ed6a305d731b4d52b2

Aliases

arxiv: 1807.07548 · arxiv_version: 1807.07548v2 · doi: 10.48550/arxiv.1807.07548 · pith_short_12: QRTZ2WSO5BWF · pith_short_16: QRTZ2WSO5BWFBXMX · pith_short_8: QRTZ2WSO

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/QRTZ2WSO5BWFBXMX6ZGOPQTIO3 \
  | 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: 84679d5a4ee86c50dd97f64ce7c26876ea1d11c597fa34ed6a305d731b4d52b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77e697f68d7f2f87f7908b8b23b36f854088dbbaf6497aad680895f4e4a61eca",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-07-19T17:34:32Z",
    "title_canon_sha256": "98620411d58102c10b7b21256fab8eee295e42b86ba647044194b1d5dfa1d1b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.07548",
    "kind": "arxiv",
    "version": 2
  }
}