Pith Number

pith:3NVXXDZJ

pith:2017:3NVXXDZJS3BE7JO3FBL52IYR5O

not attested not anchored not stored refs pending

The quest for the size of the universe in early relativistic cosmology (1917-1930)

Giulio Peruzzi, Matteo Realdi

arxiv:1704.00929 v1 · 2017-04-04 · physics.hist-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{3NVXXDZJS3BE7JO3FBL52IYR5O}

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	2026-05-18T00:47:18.826504Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db6b7b8f2996c24fa5db2857dd2311eb934c609ebeeea41aabc254020561f606

Aliases

arxiv: 1704.00929 · arxiv_version: 1704.00929v1 · doi: 10.48550/arxiv.1704.00929 · pith_short_12: 3NVXXDZJS3BE · pith_short_16: 3NVXXDZJS3BE7JO3 · pith_short_8: 3NVXXDZJ

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/3NVXXDZJS3BE7JO3FBL52IYR5O \
  | 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: db6b7b8f2996c24fa5db2857dd2311eb934c609ebeeea41aabc254020561f606

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a379775f286a3b30773b1d95e9f4cc7ff74ef3420d9b9960f1671755a84733fd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2017-04-04T09:22:20Z",
    "title_canon_sha256": "35cea318c72839457a2dfe1c5bb9459522e74fc3917619361f0e8d488b37d153"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.00929",
    "kind": "arxiv",
    "version": 1
  }
}