Pith Number

pith:UMJIG74X

pith:2011:UMJIG74XPRBQNBCACB5FJZ3ZCI

not attested not anchored not stored refs pending

A sub-40 mHz linewidth laser based on a silicon single-crystal optical cavity

C. Grebing, C. Hagemann, F. Riehle, J. Ye, L. Chen, M.J. Martin, T. Kessler, T. Legero, U. Sterr

arxiv:1112.3854 v2 · 2011-12-16 · physics.optics · physics.atom-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UMJIG74XPRBQNBCACB5FJZ3ZCI}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:21:27.175785Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a312837f977c43068440107a54e779123f1dd6da2a508786c9ea929efc31cf5e

Aliases

arxiv: 1112.3854 · arxiv_version: 1112.3854v2 · doi: 10.48550/arxiv.1112.3854 · pith_short_12: UMJIG74XPRBQ · pith_short_16: UMJIG74XPRBQNBCA · pith_short_8: UMJIG74X

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/UMJIG74XPRBQNBCACB5FJZ3ZCI \
  | 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: a312837f977c43068440107a54e779123f1dd6da2a508786c9ea929efc31cf5e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "533b375b3aa40a1cc6e7b3c8ee109e034efe9e7b91081c766d090ce9e9f6aa52",
    "cross_cats_sorted": [
      "physics.atom-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2011-12-16T15:37:29Z",
    "title_canon_sha256": "e2bbb00338e4aa534c0323c8a8b0a0efbd7502cbc6b25c570b65fb652ef69d20"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.3854",
    "kind": "arxiv",
    "version": 2
  }
}