Pith Number

pith:4JFTRD4P

pith:2011:4JFTRD4PQYGJZ2MO74P2SNZU57

not attested not anchored not stored refs pending

On tunneling across horizons

Luciano Vanzo

arxiv:1104.1569 v2 · 2011-04-08 · gr-qc · 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{4JFTRD4PQYGJZ2MO74P2SNZU57}

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	2026-05-18T04:19:31.973009Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e24b388f8f860c9ce98eff1fa93734efdb03e4f648fd6ad30d81f8049ab7b4d7

Aliases

arxiv: 1104.1569 · arxiv_version: 1104.1569v2 · doi: 10.48550/arxiv.1104.1569 · pith_short_12: 4JFTRD4PQYGJ · pith_short_16: 4JFTRD4PQYGJZ2MO · pith_short_8: 4JFTRD4P

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/4JFTRD4PQYGJZ2MO74P2SNZU57 \
  | 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: e24b388f8f860c9ce98eff1fa93734efdb03e4f648fd6ad30d81f8049ab7b4d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6aab4c7104803b1399e22f6cc4807a8eb63e3ffa5c81a68726536c66d6c35187",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2011-04-08T13:19:00Z",
    "title_canon_sha256": "faa699cbcdc289c5d981ced4f3ef90e0cd548e8e7139f32a4c58124472fb48fc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.1569",
    "kind": "arxiv",
    "version": 2
  }
}