Pith Number

pith:LF4ZBL2L

pith:2020:LF4ZBL2LVUOY3PEGQLLTDEB5KR

not attested not anchored not stored refs pending

One-hour coherent optical storage in an atomic frequency comb memory

Chuan-Feng Li, Guang-Can Guo, You-Zhi Ma, Yu Ma, Zong-Quan Zhou

arxiv:2012.14605 v3 · 2020-12-29 · quant-ph · 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{LF4ZBL2LVUOY3PEGQLLTDEB5KR}

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	2026-07-05T02:35:31.416235Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

597990af4bad1d8dbc8682d731903d546d77798046d9e9a99b14558aa34f04da

Aliases

arxiv: 2012.14605 · arxiv_version: 2012.14605v3 · doi: 10.48550/arxiv.2012.14605 · pith_short_12: LF4ZBL2LVUOY · pith_short_16: LF4ZBL2LVUOY3PEG · pith_short_8: LF4ZBL2L

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/LF4ZBL2LVUOY3PEGQLLTDEB5KR \
  | 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: 597990af4bad1d8dbc8682d731903d546d77798046d9e9a99b14558aa34f04da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a44761fbd6f8312a7441d847be96d9c23da747a8ab794ef4f7422c7d6f24cb68",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-12-29T04:58:19Z",
    "title_canon_sha256": "891c8cd19fbd88f1d24cfa7896552ad5b32230ae6d2bc3305fc56999657c7096"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.14605",
    "kind": "arxiv",
    "version": 3
  }
}