Pith Number

pith:4UGVSR5Q

pith:2021:4UGVSR5QWUZPFIP4XHTWDQYHHM

not attested not anchored not stored refs pending

Optically synchronized fiber links with spectrally pure integrated lasers

Daniel J. Blumenthal, Debapam Bose, Grant M. Brodnik, John H. Dallyn, Liron Stern, Mark W. Harrington, Paul A. Morton, Ryan O. Behunin, Scott B. Papp, Wei Zhang

arxiv:2102.05849 v1 · 2021-02-11 · physics.optics · physics.app-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{4UGVSR5QWUZPFIP4XHTWDQYHHM}

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	2026-07-05T03:04:03.550556Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e50d5947b0b532f2a1fcb9e761c3073b264d08c5310410f7931cfd6f3136ca64

Aliases

arxiv: 2102.05849 · arxiv_version: 2102.05849v1 · doi: 10.48550/arxiv.2102.05849 · pith_short_12: 4UGVSR5QWUZP · pith_short_16: 4UGVSR5QWUZPFIP4 · pith_short_8: 4UGVSR5Q

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/4UGVSR5QWUZPFIP4XHTWDQYHHM \
  | 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: e50d5947b0b532f2a1fcb9e761c3073b264d08c5310410f7931cfd6f3136ca64

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78e6fca8eeae7dbc63e2d1dda6779460c501d59baf6bcccaa9d6d92582b42381",
    "cross_cats_sorted": [
      "physics.app-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2021-02-11T04:49:59Z",
    "title_canon_sha256": "6d267a982acaaa2ddd6e26890f2d601edaa90688231f459a8fbe7d6c4525b1dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.05849",
    "kind": "arxiv",
    "version": 1
  }
}