Pith Number

pith:2CMF2ETD

pith:2009:2CMF2ETDEJDCKQ3FHQWVKXU5NA

not attested not anchored not stored refs pending

Coherent spin-networks

Claudio Perini, Elena Magliaro, Eugenio Bianchi

arxiv:0912.4054 v4 · 2009-12-20 · 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{2CMF2ETDEJDCKQ3FHQWVKXU5NA}

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	2026-05-18T04:40:46.433974Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d0985d126322462543653c2d555e9d683417efc703935434db9bd526cd9bcdbb

Aliases

arxiv: 0912.4054 · arxiv_version: 0912.4054v4 · doi: 10.48550/arxiv.0912.4054 · pith_short_12: 2CMF2ETDEJDC · pith_short_16: 2CMF2ETDEJDCKQ3F · pith_short_8: 2CMF2ETD

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/2CMF2ETDEJDCKQ3FHQWVKXU5NA \
  | 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: d0985d126322462543653c2d555e9d683417efc703935434db9bd526cd9bcdbb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a26272cb7f23e07810055c23db4e2270a5db1e3a28e88953dcdd6165d8a1bb80",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-12-20T21:11:09Z",
    "title_canon_sha256": "26677da67520897fa0f8009f288a77e4dd00bc4083e661a5fd235036dbef26f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.4054",
    "kind": "arxiv",
    "version": 4
  }
}