Pith Number

pith:BJZ5Q3IO

pith:2018:BJZ5Q3IOIQCBOXY46C4RPIVHFR

not attested not anchored not stored refs pending

Observing The Observer II: Can I know I am in a superposition and still be in a superposition?

Vlatko Vedral

arxiv:1803.03523 v1 · 2018-03-02 · quant-ph · 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{BJZ5Q3IOIQCBOXY46C4RPIVHFR}

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	2026-05-18T00:21:39.265769Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a73d86d0e4404175f1cf0b917a2a72c61589d8a7e788fc173282ba962b20d40

Aliases

arxiv: 1803.03523 · arxiv_version: 1803.03523v1 · doi: 10.48550/arxiv.1803.03523 · pith_short_12: BJZ5Q3IOIQCB · pith_short_16: BJZ5Q3IOIQCBOXY4 · pith_short_8: BJZ5Q3IO

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/BJZ5Q3IOIQCBOXY46C4RPIVHFR \
  | 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: 0a73d86d0e4404175f1cf0b917a2a72c61589d8a7e788fc173282ba962b20d40

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "81c19da7997db89300b9b2072bc7cb204e3124b316421adc5294c25193379936",
    "cross_cats_sorted": [
      "physics.hist-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-03-02T12:59:36Z",
    "title_canon_sha256": "734be8dbb1e5a5f301db637fcb52747fb14b41a1c81652bab4c36b45db8061a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.03523",
    "kind": "arxiv",
    "version": 1
  }
}