Pith Number

pith:US76TCKU

pith:2014:US76TCKUNDBYCFZGKKKCE6DIAB

not attested not anchored not stored refs pending

Quantum Metrological Bounds for Vector Parameter

Heng Fan, Yu-Ran Zhang

arxiv:1402.6197 v2 · 2014-02-25 · 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{US76TCKUNDBYCFZGKKKCE6DIAB}

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	2026-05-18T01:44:28.453329Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4bfe9895468c38117265294227868006b481b57a656ed2a97a2c3bdd9444968

Aliases

arxiv: 1402.6197 · arxiv_version: 1402.6197v2 · doi: 10.48550/arxiv.1402.6197 · pith_short_12: US76TCKUNDBY · pith_short_16: US76TCKUNDBYCFZG · pith_short_8: US76TCKU

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/US76TCKUNDBYCFZGKKKCE6DIAB \
  | 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: a4bfe9895468c38117265294227868006b481b57a656ed2a97a2c3bdd9444968

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "31f18e399c9854dffef47c333f267bbcf71793ebe9c80f6d1529379cc55d69e2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2014-02-25T15:17:41Z",
    "title_canon_sha256": "0aea6d49deb13cd60d9bb0c6bbe2bc9912d2a6dff21e866e3f356c2c9e87997d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.6197",
    "kind": "arxiv",
    "version": 2
  }
}