Pith Number

pith:6FE4BDJG

pith:2020:6FE4BDJGFJNUKF3R2XODVOMDNI

not attested not anchored not stored refs pending

No relation for Wigner's friend

Leonardo Castellani

arxiv:2011.08190 v1 · 2020-11-16 · quant-ph · hep-th · physics.hist-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{6FE4BDJGFJNUKF3R2XODVOMDNI}

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	2026-07-05T02:47:27.527850Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f149c08d262a5b451771d5dc3ab9836a3b4993e3ff81f1bd23517ab69827c012

Aliases

arxiv: 2011.08190 · arxiv_version: 2011.08190v1 · doi: 10.48550/arxiv.2011.08190 · pith_short_12: 6FE4BDJGFJNU · pith_short_16: 6FE4BDJGFJNUKF3R · pith_short_8: 6FE4BDJG

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/6FE4BDJGFJNUKF3R2XODVOMDNI \
  | 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: f149c08d262a5b451771d5dc3ab9836a3b4993e3ff81f1bd23517ab69827c012

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39d83f76f195ffb6f2f108b2546a435577f6f023faf117c0577d2b52bfbece29",
    "cross_cats_sorted": [
      "hep-th",
      "physics.hist-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-11-16T19:00:01Z",
    "title_canon_sha256": "89c80d8c5e59df88bf66fb3430f8fa96e6e5702ca256de82a5a3f61a94817d9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2011.08190",
    "kind": "arxiv",
    "version": 1
  }
}