Pith Number

pith:JHXCKZZB

pith:2002:JHXCKZZBOK45LBFX6HZXURKRRC

not attested not anchored not stored refs pending

How do two observers pool their knowledge about a quantum system?

Kurt Jacobs

arxiv:quant-ph/0201096 v2 · 2002-01-22 · 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{JHXCKZZBOK45LBFX6HZXURKRRC}

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.

Cited by

1 paper in Pith

Agreement and Compatibility in Wigner's Friend Paradox

Receipt and verification

First computed	2026-07-04T14:45:52.860964Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

49ee25672172b9d584b7f1f37a455188adf7190507964d5b99f02e3145f70e31

Aliases

arxiv: quant-ph/0201096 · arxiv_version: quant-ph/0201096v2 · doi: 10.48550/arxiv.quant-ph/0201096 · pith_short_12: JHXCKZZBOK45 · pith_short_16: JHXCKZZBOK45LBFX · pith_short_8: JHXCKZZB

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/JHXCKZZBOK45LBFX6HZXURKRRC \
  | 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: 49ee25672172b9d584b7f1f37a455188adf7190507964d5b99f02e3145f70e31

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d33c9be250f78b9d6dc1a20693ae478846e8b905932e8ccee62a3c48b3f1553",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2002-01-22T06:26:40Z",
    "title_canon_sha256": "b5f2044da4913d36fa59ebd0663f6192b462a568b743c69878676ada1a30270e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0201096",
    "kind": "arxiv",
    "version": 2
  }
}