Pith Number

pith:YOKMCVQ4

pith:2001:YOKMCVQ4ESTOTZIQ7CDUJ5HWUS

not attested not anchored not stored refs pending

No time machines in classical general relativity

S. Krasnikov

arxiv:gr-qc/0111054 v4 · 2001-11-17 · gr-qc · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YOKMCVQ4ESTOTZIQ7CDUJ5HWUS}

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	2026-05-18T02:59:07.011709Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c394c1561c24a6e9e510f88744f4f6a49d571264c6f7a192a2958ff4ad55ab6e

Aliases

arxiv: gr-qc/0111054 · arxiv_version: gr-qc/0111054v4 · doi: 10.48550/arxiv.gr-qc/0111054 · pith_short_12: YOKMCVQ4ESTO · pith_short_16: YOKMCVQ4ESTOTZIQ · pith_short_8: YOKMCVQ4

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/YOKMCVQ4ESTOTZIQ7CDUJ5HWUS \
  | 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: c394c1561c24a6e9e510f88744f4f6a49d571264c6f7a192a2958ff4ad55ab6e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8901292d1f5bdb838d03df7a6143abb6b024b6014d81ea59bdadf47cbabc9420",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2001-11-17T01:25:13Z",
    "title_canon_sha256": "c0392f7a5f37f28e1b34ae7bbc0f6ce1b4c926be78f31fe651906f044759c731"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0111054",
    "kind": "arxiv",
    "version": 4
  }
}