Pith Number

pith:FLMM4OL3

pith:2021:FLMM4OL3TW3GUVMDHZUF6SYL2N

not attested not anchored not stored refs pending

Studying the EPRL spinfoam self-energy

Pietropaolo Frisoni

arxiv:2112.08528 v2 · 2021-12-15 · gr-qc · hep-th · physics.comp-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FLMM4OL3TW3GUVMDHZUF6SYL2N}

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	2026-07-05T05:36:02.325387Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ad8ce397b9db66a55833e685f4b0bd36569417ac3b589e049f0e221cd47b217

Aliases

arxiv: 2112.08528 · arxiv_version: 2112.08528v2 · doi: 10.48550/arxiv.2112.08528 · pith_short_12: FLMM4OL3TW3G · pith_short_16: FLMM4OL3TW3GUVMD · pith_short_8: FLMM4OL3

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/FLMM4OL3TW3GUVMDHZUF6SYL2N \
  | 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: 2ad8ce397b9db66a55833e685f4b0bd36569417ac3b589e049f0e221cd47b217

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d81b836e3beebfc346605dcfdbc73a6bc99c038545e8ed79d39b2695a4cf0012",
    "cross_cats_sorted": [
      "hep-th",
      "physics.comp-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2021-12-15T23:32:32Z",
    "title_canon_sha256": "8e8eefe5733a376be24259f9ea2399d570b4827c8ec0c09bb5b1424979b0ffd0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.08528",
    "kind": "arxiv",
    "version": 2
  }
}