Pith Number

pith:GIVP7B5E

pith:2010:GIVP7B5ELLHDAFICAKMR7RXJBE

not attested not anchored not stored refs pending

Spinfoam fermions

Carlo Rovelli, Claudio Perini, Elena Magliaro, Eugenio Bianchi, Muxin Han, Wolfgang Wieland

arxiv:1012.4719 v2 · 2010-12-21 · 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{GIVP7B5ELLHDAFICAKMR7RXJBE}

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	2026-05-18T03:08:25.383563Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

322aff87a45ace30150202991fc6e90920bef230cbd692c9e0799dcf33fa6cbf

Aliases

arxiv: 1012.4719 · arxiv_version: 1012.4719v2 · doi: 10.48550/arxiv.1012.4719 · pith_short_12: GIVP7B5ELLHD · pith_short_16: GIVP7B5ELLHDAFIC · pith_short_8: GIVP7B5E

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/GIVP7B5ELLHDAFICAKMR7RXJBE \
  | 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: 322aff87a45ace30150202991fc6e90920bef230cbd692c9e0799dcf33fa6cbf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6cf57711701bcdf761879c35393db689d176158d9ff0a42396c525d0ac4952c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2010-12-21T16:25:46Z",
    "title_canon_sha256": "7d2aaacf43c362c6f4b088b6e71adc098e6629892c30483c73002fac5f43405f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1012.4719",
    "kind": "arxiv",
    "version": 2
  }
}