Pith Number

pith:MTH57H76

pith:2007:MTH57H76NR7UUAPDYUNLKAXM4X

not attested not anchored not stored refs pending

A new spinfoam vertex for quantum gravity

Etera R. Livine, Simone Speziale

arxiv:0705.0674 v2 · 2007-05-04 · 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{MTH57H76NR7UUAPDYUNLKAXM4X}

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	2026-07-04T15:21:47.624323Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

64cfdf9ffe6c7f4a01e3c51ab502ece5e0392e484ef729c0fc26c92ab7419f13

Aliases

arxiv: 0705.0674 · arxiv_version: 0705.0674v2 · doi: 10.48550/arxiv.0705.0674 · pith_short_12: MTH57H76NR7U · pith_short_16: MTH57H76NR7UUAPD · pith_short_8: MTH57H76

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/MTH57H76NR7UUAPDYUNLKAXM4X \
  | 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: 64cfdf9ffe6c7f4a01e3c51ab502ece5e0392e484ef729c0fc26c92ab7419f13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eae050090f9af540eb2386202017dfcff74575b7972dc05f6a8b1875d491bffa",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2007-05-04T16:45:38Z",
    "title_canon_sha256": "34a9bb0d84d43ff5bb6935eba3243fdeb0fabedb7d1cc3dd1c11448867f743ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0705.0674",
    "kind": "arxiv",
    "version": 2
  }
}