Pith Number

pith:ZXUVRJ3Z

pith:2013:ZXUVRJ3Z3ZRKWXLRTBI6MSPBLQ

not attested not anchored not stored refs pending

Value-indefinite observables are almost everywhere

Alastair A. Abbott, Cristian S. Calude, Karl Svozil

arxiv:1309.7188 v2 · 2013-09-27 · 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{ZXUVRJ3Z3ZRKWXLRTBI6MSPBLQ}

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	2026-05-18T02:56:51.824996Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cde958a779de62ab5d719851e649e15c3dd25dabb3bfa76091047e6f0e7b7020

Aliases

arxiv: 1309.7188 · arxiv_version: 1309.7188v2 · doi: 10.48550/arxiv.1309.7188 · pith_short_12: ZXUVRJ3Z3ZRK · pith_short_16: ZXUVRJ3Z3ZRKWXLR · pith_short_8: ZXUVRJ3Z

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/ZXUVRJ3Z3ZRKWXLRTBI6MSPBLQ \
  | 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: cde958a779de62ab5d719851e649e15c3dd25dabb3bfa76091047e6f0e7b7020

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01bc854a55a465b1ddb1fb21b25978a81fa24ba69d8da1d002693b2d86dbbe54",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-09-27T10:05:48Z",
    "title_canon_sha256": "b86ead5766b1fcb78b67f504356c6e97d78990209d3f92e1f5245c16d929d57c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.7188",
    "kind": "arxiv",
    "version": 2
  }
}