Pith Number

pith:XGKCBDGQ

pith:2002:XGKCBDGQZO6AWPKAX5QHDWYLSZ

not attested not anchored not stored refs pending

Topological Defects in Contracting Universes

2), (2) DF-FCUP, 3, (3) DAMTP, 4), (4) IAP, Cambridge, C.J.A.P. Martins (1, C. Santos (2), E.P.S. Shellard (3) ((1) CAUP, Paris), Porto, P.P. Avelino (1

arxiv:astro-ph/0211066 v1 · 2002-11-04 · astro-ph · gr-qc · hep-ph · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XGKCBDGQZO6AWPKAX5QHDWYLSZ}

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	2026-05-18T01:40:40.124996Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b994208cd0cbbc0b3d40bf6071db0b9657fa980740a2a8a8fd3791e0988c20b4

Aliases

arxiv: astro-ph/0211066 · arxiv_version: astro-ph/0211066v1 · doi: 10.48550/arxiv.astro-ph/0211066 · pith_short_12: XGKCBDGQZO6A · pith_short_16: XGKCBDGQZO6AWPKA · pith_short_8: XGKCBDGQ

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/XGKCBDGQZO6AWPKAX5QHDWYLSZ \
  | 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: b994208cd0cbbc0b3d40bf6071db0b9657fa980740a2a8a8fd3791e0988c20b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7094c311aeae6a4f38c8199c18679d44e68011f05e8795b5d3dcbbf46e937c19",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph",
      "hep-th"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-11-04T21:03:39Z",
    "title_canon_sha256": "8b53cbd16bc393bc7413365edf5fd9fcfc337d15129bc3c9ead701e02e8a5b93"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0211066",
    "kind": "arxiv",
    "version": 1
  }
}