Pith Number

pith:6A4J6FRR

pith:2019:6A4J6FRRSBRK23FS4XLC5DLHYJ

not attested not anchored not stored refs pending

Experimental multiphase estimation on a chip

Andrea Crespi, Emanuele Polino, Fabio Sciarrino, Giacomo Corrielli, Martina Riva, Mauro Valeri, Nicol\`o Spagnolo, Raffaele Silvestri, Roberto Osellame

arxiv:1904.12716 v1 · 2019-04-29 · 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{6A4J6FRRSBRK23FS4XLC5DLHYJ}

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	2026-05-17T23:47:34.297989Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f0389f16319062ad6cb2e5d62e8d67c27059c3b8828bef6cd0bfd93757fd7a17

Aliases

arxiv: 1904.12716 · arxiv_version: 1904.12716v1 · doi: 10.48550/arxiv.1904.12716 · pith_short_12: 6A4J6FRRSBRK · pith_short_16: 6A4J6FRRSBRK23FS · pith_short_8: 6A4J6FRR

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/6A4J6FRRSBRK23FS4XLC5DLHYJ \
  | 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: f0389f16319062ad6cb2e5d62e8d67c27059c3b8828bef6cd0bfd93757fd7a17

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0d26e5e924d9490f8ea45311c8ff9657b22742c885667e118fcc0888698e164",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-04-29T13:56:10Z",
    "title_canon_sha256": "2a80437f4d8a8813ae069034af4efffb48710a0f6dcedfaf87767029103c0531"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.12716",
    "kind": "arxiv",
    "version": 1
  }
}