Pith Number

pith:I3U5S4WG

pith:2017:I3U5S4WGJVTKB3NWDWO2RA4AYI

not attested not anchored not stored refs pending

Experimental optical phase measurement approaching the exact Heisenberg limit

Dominic W. Berry, Geoff J. Pryde, Howard M. Wiseman, Sergei Slussarenko, Shakib Daryanoosh

arxiv:1712.06630 v3 · 2017-12-18 · 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{I3U5S4WGJVTKB3NWDWO2RA4AYI}

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	2026-05-17T23:47:12.760429Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46e9d972c64d66a0edb61d9da88380c2197ee7b8aa3e54d8cc70b8e3ccd68577

Aliases

arxiv: 1712.06630 · arxiv_version: 1712.06630v3 · doi: 10.48550/arxiv.1712.06630 · pith_short_12: I3U5S4WGJVTK · pith_short_16: I3U5S4WGJVTKB3NW · pith_short_8: I3U5S4WG

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/I3U5S4WGJVTKB3NWDWO2RA4AYI \
  | 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: 46e9d972c64d66a0edb61d9da88380c2197ee7b8aa3e54d8cc70b8e3ccd68577

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58bde745d0a501995b53809ea11bf16059a0ebe800a9d64a85c6691ca7f101e5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-12-18T19:17:03Z",
    "title_canon_sha256": "05cf5522eecca7912bc173f6445f006f3ce5f517879f063824b5298265595b49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.06630",
    "kind": "arxiv",
    "version": 3
  }
}