Pith Number

pith:TBD7F3IO

pith:2015:TBD7F3IOQTG2SZEISJBA667UHU

not attested not anchored not stored refs pending

The power of being positive: Robust state estimation made possible by quantum mechanics

Amir Kalev, Charles H. Baldwin, Ivan H. Deutsch

arxiv:1511.01433 v2 · 2015-11-04 · quant-ph

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TBD7F3IOQTG2SZEISJBA667UHU}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:15:14.800261Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9847f2ed0e84cda9648892420f7bf43d0a9fda4c0f5894733e8ce58f5265f11a

Aliases

arxiv: 1511.01433 · arxiv_version: 1511.01433v2 · doi: 10.48550/arxiv.1511.01433 · pith_short_12: TBD7F3IOQTG2 · pith_short_16: TBD7F3IOQTG2SZEI · pith_short_8: TBD7F3IO

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/TBD7F3IOQTG2SZEISJBA667UHU \
  | 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: 9847f2ed0e84cda9648892420f7bf43d0a9fda4c0f5894733e8ce58f5265f11a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53de48f743b9fc3023a0c6f5ca215107e33cf4898a7922239c080bc19a3fdfd9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-11-04T18:50:31Z",
    "title_canon_sha256": "7ca407eba4f0809a024d79e291c671d80c883e736011647ca4bae4cdf39fbf87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.01433",
    "kind": "arxiv",
    "version": 2
  }
}