Pith Number

pith:NED4MQDU

pith:2021:NED4MQDUMORTX3N4MIL7LNNWRY

not attested not anchored not stored refs pending

Efficient Frequency Doubling with Active Stabilization on Chip

Chao Tang, Heng Fan, Jia-Yang Chen, Mingwei Jin, Santosh Kumar, Yong Meng Sua, Yu-ping Huang, Zhan Li, Zhaohui Ma

arxiv:2103.00309 v1 · 2021-02-27 · physics.optics · 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{NED4MQDUMORTX3N4MIL7LNNWRY}

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	2026-07-05T02:19:04.386442Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6907c6407463a33bedbc6217f5b5b68e3ca73c5b45d7b1ad5b1c9d5ff5ba9da6

Aliases

arxiv: 2103.00309 · arxiv_version: 2103.00309v1 · doi: 10.48550/arxiv.2103.00309 · pith_short_12: NED4MQDUMORT · pith_short_16: NED4MQDUMORTX3N4 · pith_short_8: NED4MQDU

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/NED4MQDUMORTX3N4MIL7LNNWRY \
  | 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: 6907c6407463a33bedbc6217f5b5b68e3ca73c5b45d7b1ad5b1c9d5ff5ba9da6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "400c810aed59aeee99b15a03adba26b310d691feb6c81fe05c8ea6dffa61cabb",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2021-02-27T20:07:58Z",
    "title_canon_sha256": "9f74ae683ecfe625a337f31aa3e9ef375fea3081f055d022359c54e48ac57e10"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.00309",
    "kind": "arxiv",
    "version": 1
  }
}