Pith Number

pith:2USAGX5K

pith:2011:2USAGX5KJDRYFCHJZG7NVMNX5U

not attested not anchored not stored refs pending

Emergence of gravity from spinfoams

Claudio Perini, Elena Magliaro

arxiv:1108.2258 v1 · 2011-08-10 · 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{2USAGX5KJDRYFCHJZG7NVMNX5U}

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	2026-05-18T03:27:01.899951Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d524035faa48e38288e9c9bedab1b7ed2c2dfa3ec7d44c09b77129d044329d9d

Aliases

arxiv: 1108.2258 · arxiv_version: 1108.2258v1 · doi: 10.48550/arxiv.1108.2258 · pith_short_12: 2USAGX5KJDRY · pith_short_16: 2USAGX5KJDRYFCHJ · pith_short_8: 2USAGX5K

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/2USAGX5KJDRYFCHJZG7NVMNX5U \
  | 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: d524035faa48e38288e9c9bedab1b7ed2c2dfa3ec7d44c09b77129d044329d9d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33282ad6af20b439bd092a40c955f69a60546b3be2cfa1f0c1e2f3a75da5e501",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2011-08-10T19:33:19Z",
    "title_canon_sha256": "53934ed1a6368721b8442dd738b77f6b74dcd6564125cb847fac024698930dd6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.2258",
    "kind": "arxiv",
    "version": 1
  }
}