Pith Number

pith:G4WZA2E5

pith:2000:G4WZA2E5TV4S4DPDPN2OIVJCZO

not attested not anchored not stored refs pending

Brane surgery: energy conditions, traversable wormholes, and voids

Carlos Barcelo (Washington University in Saint Louis), Matt Visser (Washington University in Saint Louis)

arxiv:hep-th/0004022 v3 · 2000-04-04 · hep-th · 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{G4WZA2E5TV4S4DPDPN2OIVJCZO}

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.

Cited by

1 paper in Pith

Wormholes from beyond

Receipt and verification

First computed	2026-07-04T16:20:43.569617Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

372d90689d9d792e0de37b74e45522cba4f993d7b5a77e5a17025fb97dc4b312

Aliases

arxiv: hep-th/0004022 · arxiv_version: hep-th/0004022v3 · doi: 10.48550/arxiv.hep-th/0004022 · pith_short_12: G4WZA2E5TV4S · pith_short_16: G4WZA2E5TV4S4DPD · pith_short_8: G4WZA2E5

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/G4WZA2E5TV4S4DPDPN2OIVJCZO \
  | 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: 372d90689d9d792e0de37b74e45522cba4f993d7b5a77e5a17025fb97dc4b312

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae0e449c3b2fd3dc1dad7023e65c415abe06906378789caeb72ec21442438c59",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "2000-04-04T19:53:12Z",
    "title_canon_sha256": "108230802fdcc90beea3c78e133b0043c7b829926562569b077274b9d0caa9d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/0004022",
    "kind": "arxiv",
    "version": 3
  }
}