Pith Number

pith:DLN3LYZ6

pith:2019:DLN3LYZ6CPNJ3SAENNLWKBRFVH

not attested not anchored not stored refs pending

End-to-end topology for fiber comb based optical frequency transfer at the $10^{-21}$ level

Burghard Lipphardt, Erik Benkler, Felix Rohde, Rafa{\l} Wilk, Thomas Puppe, Uwe Sterr

arxiv:1910.04261 v2 · 2019-10-09 · physics.optics · physics.ins-det

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DLN3LYZ6CPNJ3SAENNLWKBRFVH}

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	2026-07-05T00:52:06.413038Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1adbb5e33e13da9dc8046b57650625a9e6f3596f21eac059c37263a23e006132

Aliases

arxiv: 1910.04261 · arxiv_version: 1910.04261v2 · doi: 10.48550/arxiv.1910.04261 · pith_short_12: DLN3LYZ6CPNJ · pith_short_16: DLN3LYZ6CPNJ3SAE · pith_short_8: DLN3LYZ6

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/DLN3LYZ6CPNJ3SAENNLWKBRFVH \
  | 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: 1adbb5e33e13da9dc8046b57650625a9e6f3596f21eac059c37263a23e006132

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ebcd4a9b80964ee39a6199169714d545ee0bf8fa5100ef7d9a53dc99786eb92",
    "cross_cats_sorted": [
      "physics.ins-det"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2019-10-09T21:28:46Z",
    "title_canon_sha256": "a3670727717dd34fda1f3d005aa44e48dd5700a88290e02545cb18054385efbd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.04261",
    "kind": "arxiv",
    "version": 2
  }
}