Pith Number

pith:GSWCOQ2Z

pith:2014:GSWCOQ2Z6PLCGVERJMZ4SB24QY

not attested not anchored not stored refs pending

Fidelity-optimized quantum state estimation

Amir Kalev, Itay Hen

arxiv:1409.1952 v2 · 2014-09-05 · 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{GSWCOQ2Z6PLCGVERJMZ4SB24QY}

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	2026-05-18T01:33:24.423265Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

34ac274359f3d62354914b33c9075c86097e4ddf555e18bdaae1fe274234611e

Aliases

arxiv: 1409.1952 · arxiv_version: 1409.1952v2 · doi: 10.48550/arxiv.1409.1952 · pith_short_12: GSWCOQ2Z6PLC · pith_short_16: GSWCOQ2Z6PLCGVER · pith_short_8: GSWCOQ2Z

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/GSWCOQ2Z6PLCGVERJMZ4SB24QY \
  | 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: 34ac274359f3d62354914b33c9075c86097e4ddf555e18bdaae1fe274234611e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7621bf9405b0d0035b47203d54a5b29c74f7d473a5336c95a63feff856e4386",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2014-09-05T21:35:27Z",
    "title_canon_sha256": "205272fc45bd8d942877bff31e82507c2f7297c255f9e26d4c5773858608355f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.1952",
    "kind": "arxiv",
    "version": 2
  }
}