Pith Number

pith:CPPWWHRT

pith:2007:CPPWWHRT4O3UIG2XGEFVI2RD36

not attested not anchored not stored refs pending

The Nature of Generic Cosmological Singularities

Claes Uggla

arxiv:0706.0463 v1 · 2007-06-04 · 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{CPPWWHRT4O3UIG2XGEFVI2RD36}

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	2026-05-18T00:59:33.066375Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13df6b1e33e3b7441b57310b546a23df92cf364af2e145999367d5c932fc1499

Aliases

arxiv: 0706.0463 · arxiv_version: 0706.0463v1 · doi: 10.48550/arxiv.0706.0463 · pith_short_12: CPPWWHRT4O3U · pith_short_16: CPPWWHRT4O3UIG2X · pith_short_8: CPPWWHRT

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/CPPWWHRT4O3UIG2XGEFVI2RD36 \
  | 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: 13df6b1e33e3b7441b57310b546a23df92cf364af2e145999367d5c932fc1499

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8862b82df7e135ffdaa765242c929c31ef2e60cf055d2f93c98633cfc7735257",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2007-06-04T15:51:30Z",
    "title_canon_sha256": "d94e9947bc9e7117765c44978aba9388c74085a07189488159a9852333049683"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0706.0463",
    "kind": "arxiv",
    "version": 1
  }
}