Pith Number

pith:YFCN4BA7

pith:2017:YFCN4BA7J4L4GNVZ3KUREGNZR6

not attested not anchored not stored refs pending

Amplification of entangled photon states by klystron

Zheng Li

arxiv:1702.08477 v2 · 2017-02-27 · quant-ph · physics.acc-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{YFCN4BA7J4L4GNVZ3KUREGNZR6}

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	2026-05-18T00:49:31.292569Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c144de041f4f17c336b9daa91219b98f99906cbf4d965da9b42962fe3e2aafc2

Aliases

arxiv: 1702.08477 · arxiv_version: 1702.08477v2 · doi: 10.48550/arxiv.1702.08477 · pith_short_12: YFCN4BA7J4L4 · pith_short_16: YFCN4BA7J4L4GNVZ · pith_short_8: YFCN4BA7

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/YFCN4BA7J4L4GNVZ3KUREGNZR6 \
  | 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: c144de041f4f17c336b9daa91219b98f99906cbf4d965da9b42962fe3e2aafc2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "607928f0209ea263b551dbfc64090dda71137247973c638dcee6c72472146636",
    "cross_cats_sorted": [
      "physics.acc-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-02-27T19:15:02Z",
    "title_canon_sha256": "206ed105de3ba37eadf27063ce688db07e5455ada5d2ec24f8319a240afaefb1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.08477",
    "kind": "arxiv",
    "version": 2
  }
}