Pith Number

pith:NG5SMDQQ

pith:2006:NG5SMDQQB2AOODRMNCWJLLDIXG

not attested not anchored not stored refs pending

$^{87}$Sr lattice clock with inaccuracy below 10$^{-15}$

Andrew D. Ludlow, Jun Ye, Martin M. Boyd, Sebastian Blatt, Seth M. Foreman, Tanya Zelevinsky, Tetsuya Ido

arxiv:physics/0611067 v1 · 2006-11-07 · physics.atom-ph · physics.gen-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{NG5SMDQQB2AOODRMNCWJLLDIXG}

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	2026-07-04T17:02:49.253788Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69bb260e100e80e70e2c68ac95ac68b98a9746ed8860475aaab87042aad38cf6

Aliases

arxiv: physics/0611067 · arxiv_version: physics/0611067v1 · doi: 10.48550/arxiv.physics/0611067 · pith_short_12: NG5SMDQQB2AO · pith_short_16: NG5SMDQQB2AOODRM · pith_short_8: NG5SMDQQ

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/NG5SMDQQB2AOODRMNCWJLLDIXG \
  | 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: 69bb260e100e80e70e2c68ac95ac68b98a9746ed8860475aaab87042aad38cf6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6770fc0086efda3057ee6fc0335e156c74098daa5adc5cdb7b399c2a7821b847",
    "cross_cats_sorted": [
      "physics.gen-ph"
    ],
    "license": "",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2006-11-07T06:39:45Z",
    "title_canon_sha256": "f94228bac33d9da064135fbbff43ab6269860c19769d907bf7b5bce5ffaf42d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0611067",
    "kind": "arxiv",
    "version": 1
  }
}