Pith Number

pith:EHXSKNAW

pith:2008:EHXSKNAWDEB5JQBTS7BCMOURSE

not attested not anchored not stored refs pending

Interrogation laser for a strontium lattice clock

Ch. Lisdat, F. Riehle, G. Grosche, H. Schnatz, J. S. R. Vellore Winfred, T. Legero, U. Sterr

arxiv:0809.5140 v1 · 2008-09-30 · physics.optics · physics.atom-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{EHXSKNAWDEB5JQBTS7BCMOURSE}

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	2026-05-18T00:57:58.453455Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21ef2534161903d4c03397c2263a91910d69201972fb6cb37fd496a5fe016af8

Aliases

arxiv: 0809.5140 · arxiv_version: 0809.5140v1 · doi: 10.48550/arxiv.0809.5140 · pith_short_12: EHXSKNAWDEB5 · pith_short_16: EHXSKNAWDEB5JQBT · pith_short_8: EHXSKNAW

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/EHXSKNAWDEB5JQBTS7BCMOURSE \
  | 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: 21ef2534161903d4c03397c2263a91910d69201972fb6cb37fd496a5fe016af8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10ef28252bfd128ec64ebe7e332bc8fead5238b649126e8263a9cee964b1bbb2",
    "cross_cats_sorted": [
      "physics.atom-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2008-09-30T09:07:15Z",
    "title_canon_sha256": "cd830cf0b2fed6cd3110a7ea93b7d4fdc472bc9b120d47a17fb429709f267fea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.5140",
    "kind": "arxiv",
    "version": 1
  }
}