Pith Number

pith:4HAKJZHN

pith:2009:4HAKJZHNWT6JORKKU3FPIYC6WW

not attested not anchored not stored refs pending

Ultra low frequency noise laser by locking to an optical fiber delay line

Fabien K\'ef\'elian, Giorgio Santarelli, Haifeng Jiang, Pierre Lemonde

arxiv:0901.4856 v2 · 2009-01-30 · 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{4HAKJZHNWT6JORKKU3FPIYC6WW}

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	2026-05-18T02:14:55.011754Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1c0a4e4edb4fc97454aa6caf4605eb5a4e1f19e973a56b7fd4da68064ea6774

Aliases

arxiv: 0901.4856 · arxiv_version: 0901.4856v2 · doi: 10.48550/arxiv.0901.4856 · pith_short_12: 4HAKJZHNWT6J · pith_short_16: 4HAKJZHNWT6JORKK · pith_short_8: 4HAKJZHN

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/4HAKJZHNWT6JORKKU3FPIYC6WW \
  | 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: e1c0a4e4edb4fc97454aa6caf4605eb5a4e1f19e973a56b7fd4da68064ea6774

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c10f53e2e9072352d6cd6b43ec07f72ddfe9ba7e9c9bc82ffd300c44f1a26617",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2009-01-30T10:34:09Z",
    "title_canon_sha256": "13067603f7bf350781a02801fed29a69086f588f92ddaf253540673cee597173"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.4856",
    "kind": "arxiv",
    "version": 2
  }
}