Pith Number

pith:7R27DQ4J

pith:1998:7R27DQ4JIHMGTQOC2BLVG5FABG

not attested not anchored not stored refs pending

Singular instantons and creation of open universes

Alexander Vilenkin (Tufts University)

arxiv:hep-th/9803084 v2 · 1998-03-10 · hep-th · astro-ph · 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{7R27DQ4JIHMGTQOC2BLVG5FABG}

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	2026-07-04T17:18:55.504313Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc75f1c38941d869c1c2d0575374a009bff7cd590e772f6d2fb8f18852f0c5b2

Aliases

arxiv: hep-th/9803084 · arxiv_version: hep-th/9803084v2 · doi: 10.48550/arxiv.hep-th/9803084 · pith_short_12: 7R27DQ4JIHMG · pith_short_16: 7R27DQ4JIHMGTQOC · pith_short_8: 7R27DQ4J

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/7R27DQ4JIHMGTQOC2BLVG5FABG \
  | 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: fc75f1c38941d869c1c2d0575374a009bff7cd590e772f6d2fb8f18852f0c5b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d54179bcb81e397fb36e5f9e31420aed6b16dce701896fc22d0b3fe072a6808a",
    "cross_cats_sorted": [
      "astro-ph",
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "1998-03-10T22:07:41Z",
    "title_canon_sha256": "14cced8968db44699f7bb57988d3df425e1afaaec97e964b9958a4d1a8ef0044"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/9803084",
    "kind": "arxiv",
    "version": 2
  }
}