Pith Number

pith:PZJ4KPIM

pith:2001:PZJ4KPIM3RJKI6FGMS5H35YEXX

not attested not anchored not stored refs pending

Gravitational instantons, extra dimensions and form fields

E. J. Copeland, J. A. Gray

arxiv:hep-th/0102090 v1 · 2001-02-15 · hep-th · gr-qc · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PZJ4KPIM3RJKI6FGMS5H35YEXX}

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	2026-07-04T17:21:04.226781Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e53c53d0cdc52a478a664ba7df704bddf42a20b56799cf2e7d71a76a27ea07b

Aliases

arxiv: hep-th/0102090 · arxiv_version: hep-th/0102090v1 · doi: 10.48550/arxiv.hep-th/0102090 · pith_short_12: PZJ4KPIM3RJK · pith_short_16: PZJ4KPIM3RJKI6FG · pith_short_8: PZJ4KPIM

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/PZJ4KPIM3RJKI6FGMS5H35YEXX \
  | 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: 7e53c53d0cdc52a478a664ba7df704bddf42a20b56799cf2e7d71a76a27ea07b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d9e1ca04242a11abd10ca9075ea73f631f4f03c4634a387bf2f2111b15e52da",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph"
    ],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "2001-02-15T16:48:09Z",
    "title_canon_sha256": "7a75fc3aef372118e8dcbe1234376d15b45a831c756b75202473b3892b151d7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/0102090",
    "kind": "arxiv",
    "version": 1
  }
}