Pith Number

pith:SERD646A

pith:2018:SERD646AT4VVW3GU67AFQ2FUZF

not attested not anchored not stored refs pending

Non-commuting degrees of freedom in linear quantum gravity

Chiara Marletto, Vlatko Vedral

arxiv:1812.06750 v1 · 2018-12-17 · quant-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{SERD646AT4VVW3GU67AFQ2FUZF}

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	2026-05-17T23:58:09.400021Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91223f73c09f2b5b6cd4f7c05868b4c96bc9a01081be934081a076ebf61f47cd

Aliases

arxiv: 1812.06750 · arxiv_version: 1812.06750v1 · doi: 10.48550/arxiv.1812.06750 · pith_short_12: SERD646AT4VV · pith_short_16: SERD646AT4VVW3GU · pith_short_8: SERD646A

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/SERD646AT4VVW3GU67AFQ2FUZF \
  | 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: 91223f73c09f2b5b6cd4f7c05868b4c96bc9a01081be934081a076ebf61f47cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "687dc2f24b308708743d152637234a122cf0ff3d28f852d0c953da579c3cfe35",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-12-17T13:24:41Z",
    "title_canon_sha256": "71f6b8fcb56bcb8777d120337ac8ec05e049293c2970d1cd0fff21164aac5826"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.06750",
    "kind": "arxiv",
    "version": 1
  }
}