Pith Number

pith:RK72OA53

pith:2020:RK72OA53YO23LDDZBFTW67OEBU

not attested not anchored not stored refs pending

Single-photon distributed free-space spectroscopy

C. Zhang, H. Xia, J. Qiu, L. Tao, L. Wang, L. You, L. Zhao, M. Li, M. Shangguan, P. Jiang, S. Yu, T. Wei, T. Wu, X. Dou, Y. Hu, Y. Wu, Z. Zhang

arxiv:2012.00674 v1 · 2020-11-27 · physics.ao-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{RK72OA53YO23LDDZBFTW67OEBU}

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	2026-07-05T01:56:19.033791Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8abfa703bbc3b5b58c7909676f7dc40d0efbc42578bef055c30c5ee3f883333c

Aliases

arxiv: 2012.00674 · arxiv_version: 2012.00674v1 · doi: 10.48550/arxiv.2012.00674 · pith_short_12: RK72OA53YO23 · pith_short_16: RK72OA53YO23LDDZ · pith_short_8: RK72OA53

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/RK72OA53YO23LDDZBFTW67OEBU \
  | 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: 8abfa703bbc3b5b58c7909676f7dc40d0efbc42578bef055c30c5ee3f883333c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a4f9a28aec861bec37295ce552bca12abda5f43593fcbfa79b1beb66ae2e99b",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "physics.ao-ph",
    "submitted_at": "2020-11-27T07:50:08Z",
    "title_canon_sha256": "21941dc6afc8592c3a9b33be084b5deaebdf68438ad4c6645181d0caec0d174a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.00674",
    "kind": "arxiv",
    "version": 1
  }
}