Pith Number

pith:JUBGI7W6

pith:2007:JUBGI7W636FYNRI3S4CVMHL3AA

not attested not anchored not stored refs pending

Consistently Solving the Simplicity Constraints for Spinfoam Quantum Gravity

Etera R. Livine, Simone Speziale

arxiv:0708.1915 v3 · 2007-08-14 · 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{JUBGI7W636FYNRI3S4CVMHL3AA}

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	2026-07-04T17:05:10.774220Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4d02647ededf8b86c51b9705561d7b0000b288915c96e0fd79fd3f578b0a78f3

Aliases

arxiv: 0708.1915 · arxiv_version: 0708.1915v3 · doi: 10.48550/arxiv.0708.1915 · pith_short_12: JUBGI7W636FY · pith_short_16: JUBGI7W636FYNRI3 · pith_short_8: JUBGI7W6

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/JUBGI7W636FYNRI3S4CVMHL3AA \
  | 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: 4d02647ededf8b86c51b9705561d7b0000b288915c96e0fd79fd3f578b0a78f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3cacf391d486a4d9708dbe181137a8830b8fdd21040726c14bf431bed753bd04",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2007-08-14T19:42:22Z",
    "title_canon_sha256": "25becf31bdd45c618cc83d3d0aaf4991e2f77bcc4a5dc59351fba793aacdb0bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0708.1915",
    "kind": "arxiv",
    "version": 3
  }
}