Pith Number

pith:FET72DZN

pith:2020:FET72DZNGRHRZRSWMVRJXRS3AN

not attested not anchored not stored refs pending

Respecting One's Fellow: QBism's Analysis of Wigner's Friend

Christopher A. Fuchs, John B. DeBrota, Ruediger Schack

arxiv:2008.03572 v1 · 2020-08-08 · 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{FET72DZNGRHRZRSWMVRJXRS3AN}

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	2026-07-05T05:07:32.327586Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2927fd0f2d344f1cc65665629bc65b0379868b7b2eb5da5d25a973c4751bdab8

Aliases

arxiv: 2008.03572 · arxiv_version: 2008.03572v1 · doi: 10.48550/arxiv.2008.03572 · pith_short_12: FET72DZNGRHR · pith_short_16: FET72DZNGRHRZRSW · pith_short_8: FET72DZN

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/FET72DZNGRHRZRSWMVRJXRS3AN \
  | 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: 2927fd0f2d344f1cc65665629bc65b0379868b7b2eb5da5d25a973c4751bdab8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30f75178ca260a92d17879924d63405adbf5f8d5ba124f109def213fa92b1dd9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-08-08T18:33:04Z",
    "title_canon_sha256": "3a7d56fb18e6ed31ef3b181037175f3aa8cfdba5f64eb3d6e07c46e438f02080"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2008.03572",
    "kind": "arxiv",
    "version": 1
  }
}