Pith Number

pith:O4CEHPEK

pith:2015:O4CEHPEKEMH6VBC34W2LHJ2YJA

not attested not anchored not stored refs pending

Some geometry of de Sitter space

Paul Tod

arxiv:1505.06123 v1 · 2015-05-22 · 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{O4CEHPEKEMH6VBC34W2LHJ2YJA}

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	2026-05-18T02:03:49.054692Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

770443bc8a230fea845be5b4b3a75848250995819c5b6f107736218a0e38ae56

Aliases

arxiv: 1505.06123 · arxiv_version: 1505.06123v1 · doi: 10.48550/arxiv.1505.06123 · pith_short_12: O4CEHPEKEMH6 · pith_short_16: O4CEHPEKEMH6VBC3 · pith_short_8: O4CEHPEK

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/O4CEHPEKEMH6VBC34W2LHJ2YJA \
  | 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: 770443bc8a230fea845be5b4b3a75848250995819c5b6f107736218a0e38ae56

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6fd4cf3eebc35b674f07bd0e0e5f4290657328f4cdd7ffe81e79f88410d3f766",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-05-22T15:35:00Z",
    "title_canon_sha256": "2c6f3b07dfbdb2bb3355ec328acc562a4d9ccf30d1f1a5127fa7d91ab1a48836"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.06123",
    "kind": "arxiv",
    "version": 1
  }
}