Pith Number

pith:PNUR4UG4

pith:2019:PNUR4UG4QJ3YMF2TVAA4YRXMFW

not attested not anchored not stored refs pending

Phase noise accumulation in recirculating frequency shifting loop based programmable optical frequency comb

Diannan Hu, Quan Yuan, Zhaoyu Lu

arxiv:1905.07552 v1 · 2019-05-18 · physics.optics

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PNUR4UG4QJ3YMF2TVAA4YRXMFW}

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	2026-05-17T23:45:49.357838Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b691e50dc8277861753a801cc46ec2d83ec0a848b9d02a42e6877178c25535f

Aliases

arxiv: 1905.07552 · arxiv_version: 1905.07552v1 · doi: 10.48550/arxiv.1905.07552 · pith_short_12: PNUR4UG4QJ3Y · pith_short_16: PNUR4UG4QJ3YMF2T · pith_short_8: PNUR4UG4

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/PNUR4UG4QJ3YMF2TVAA4YRXMFW \
  | 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: 7b691e50dc8277861753a801cc46ec2d83ec0a848b9d02a42e6877178c25535f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4343d7e41b83e2e2414febc70fc0f436cd7802e66519c053b16046da97be4841",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2019-05-18T08:11:52Z",
    "title_canon_sha256": "a80f98fc582b5c696b3e01c4ea28ea4bd412f9660f34fd44de62d048308d05dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.07552",
    "kind": "arxiv",
    "version": 1
  }
}