Pith Number

pith:RKOYPTSG

pith:2011:RKOYPTSGA5OZNUQ5TS465MYL3Z

not attested not anchored not stored refs pending

A Short and Subjective Introduction to the Spinfoam Framework for Quantum Gravity

Etera R. Livine

arxiv:1101.5061 v1 · 2011-01-26 · 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{RKOYPTSGA5OZNUQ5TS465MYL3Z}

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	2026-05-18T02:22:49.471007Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a9d87ce46075d96d21d9cb9eeb30bde4d80cbaa579add3db348ad54fa8f2d7a

Aliases

arxiv: 1101.5061 · arxiv_version: 1101.5061v1 · doi: 10.48550/arxiv.1101.5061 · pith_short_12: RKOYPTSGA5OZ · pith_short_16: RKOYPTSGA5OZNUQ5 · pith_short_8: RKOYPTSG

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/RKOYPTSGA5OZNUQ5TS465MYL3Z \
  | 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: 8a9d87ce46075d96d21d9cb9eeb30bde4d80cbaa579add3db348ad54fa8f2d7a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9693223bdebd3b606b34f3f6ca218d0af32a648c6ee92807c59a2d6473949203",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2011-01-26T13:51:14Z",
    "title_canon_sha256": "e7e561b7ea8282a5a12261d5746414ef38912c6965ef2c3ae7b52f5959dfcce3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.5061",
    "kind": "arxiv",
    "version": 1
  }
}