Pith Number

pith:AI7G5RJ2

pith:2018:AI7G5RJ2RNR6XGX5PTYVFH5PU7

not attested not anchored not stored refs pending

Femtosecond Synchronization of Optical Clocks Off of a Flying Quadcopter

Hugo Bergeron, Isaac Khader, Jean-Daniel Desch\^enes, Kevin C. Cossel, Laura C. Sinclair, Michael Cermak, Nathan R. Newbury, William C. Swann

arxiv:1808.07870 v2 · 2018-08-22 · physics.ins-det · 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{AI7G5RJ2RNR6XGX5PTYVFH5PU7}

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	2026-05-17T23:43:04.672653Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

023e6ec53a8b63eb9afd7cf1529fafa7ea5d6eacf1aeff3ba50b8510092c4760

Aliases

arxiv: 1808.07870 · arxiv_version: 1808.07870v2 · doi: 10.48550/arxiv.1808.07870 · pith_short_12: AI7G5RJ2RNR6 · pith_short_16: AI7G5RJ2RNR6XGX5 · pith_short_8: AI7G5RJ2

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/AI7G5RJ2RNR6XGX5PTYVFH5PU7 \
  | 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: 023e6ec53a8b63eb9afd7cf1529fafa7ea5d6eacf1aeff3ba50b8510092c4760

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6900e8d11b828e85feb4e8a8a22d5c214280d173372e8c119b9def7f0da46bf1",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2018-08-22T22:58:01Z",
    "title_canon_sha256": "7c2919a03db76cbbb0e473571a7faf924e064c748757fba7396f321f5b98c181"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.07870",
    "kind": "arxiv",
    "version": 2
  }
}