Pith Number

pith:4IFZCKEK

pith:2015:4IFZCKEKVSK6RAFT3PMPFTLXEG

not attested not anchored not stored refs pending

A new scheme of compact cold atom clock based on diffuse laser cooling in a cylindrical cavity

Huadong Cheng, Jinyin Wan, Liang Liu, Ling Xiao, Peng Liu, Xiumei Wang, Yaning Wang, Yanling Meng

arxiv:1509.07650 v1 · 2015-09-25 · 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{4IFZCKEKVSK6RAFT3PMPFTLXEG}

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	2026-05-18T01:24:52.031242Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e20b91288aac95e880b3dbd8f2cd772190dfc396a7b10c933df3ddfaabba6ecd

Aliases

arxiv: 1509.07650 · arxiv_version: 1509.07650v1 · doi: 10.48550/arxiv.1509.07650 · pith_short_12: 4IFZCKEKVSK6 · pith_short_16: 4IFZCKEKVSK6RAFT · pith_short_8: 4IFZCKEK

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/4IFZCKEKVSK6RAFT3PMPFTLXEG \
  | 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: e20b91288aac95e880b3dbd8f2cd772190dfc396a7b10c933df3ddfaabba6ecd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1996780830a8d9092dfd04a96e96f1f9e5a0fa42ee748135acb4084c2e6c5d22",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2015-09-25T09:34:44Z",
    "title_canon_sha256": "203d2ca5a7bee5efc9bd8c464a165c8a16e7e1c32e3a57faa8f7e83c029dfec4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.07650",
    "kind": "arxiv",
    "version": 1
  }
}