Pith Number

pith:M7K3KZXK

pith:2012:M7K3KZXKX2DXXHHK57MKZOSYRB

not attested not anchored not stored refs pending

The boundary of G\"odel's spacetime and the chronology protection conjecture

P. Pitanga

arxiv:1201.1129 v2 · 2012-01-05 · 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{M7K3KZXKX2DXXHHK57MKZOSYRB}

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	2026-05-18T04:05:03.175622Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

67d5b566eabe877b9ceaefd8acba58887406a45b47185ec6bff1a09a126010e1

Aliases

arxiv: 1201.1129 · arxiv_version: 1201.1129v2 · doi: 10.48550/arxiv.1201.1129 · pith_short_12: M7K3KZXKX2DX · pith_short_16: M7K3KZXKX2DXXHHK · pith_short_8: M7K3KZXK

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/M7K3KZXKX2DXXHHK57MKZOSYRB \
  | 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: 67d5b566eabe877b9ceaefd8acba58887406a45b47185ec6bff1a09a126010e1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54effbb2a06e717c3559a229c8eaa4ed79020423341b1e71be0eb5d052becc5c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-01-05T11:28:59Z",
    "title_canon_sha256": "ce02fdf89a3d8d93969fbbf87d7202b1d5b78a71f79725c0ff387f797a28bb43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.1129",
    "kind": "arxiv",
    "version": 2
  }
}