Pith Number

pith:ZTBBEU3O

pith:2026:ZTBBEU3OAECFSNXK6NYIVHAPW4

not attested not anchored not stored refs pending

Wigner's Friend Paradox Revisited

Markus Enz, Peter Reichert

arxiv:2608.02635 v1 · 2026-07-30 · 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{ZTBBEU3OAECFSNXK6NYIVHAPW4}

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	2026-08-05T00:38:05.032720Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ccc212536e01045936eaf3708a9c0fb703fbcfc7cc09564d08387a22983e8cc4

Aliases

arxiv: 2608.02635 · arxiv_version: 2608.02635v1 · doi: 10.48550/arxiv.2608.02635 · pith_short_12: ZTBBEU3OAECF · pith_short_16: ZTBBEU3OAECFSNXK · pith_short_8: ZTBBEU3O

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/ZTBBEU3OAECFSNXK6NYIVHAPW4 \
  | 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: ccc212536e01045936eaf3708a9c0fb703fbcfc7cc09564d08387a22983e8cc4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b182003e1c196c94ec4d3d3f440410954f62dffe59989d976f2bc93de04fceb0",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-07-30T19:45:55Z",
    "title_canon_sha256": "84b857c7318ddb13d934b974e179fccdbe28c514c213af57ceeb3e5d9df55e91"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.02635",
    "kind": "arxiv",
    "version": 1
  }
}