Pith Number

pith:X4AQXPEB

pith:2019:X4AQXPEBYHOGWAQXXX2SXLXKFP

not attested not anchored not stored refs pending

Dispersion independent long-haul photon counting OTDR

Bin Li, Guangwei Deng, Haizhi Song, Hao Li, Heng Zhou, Kun Qiu, Lixing You, Qiang Zhou, Ruiming Zhang, Yong Wang, You Wang, Yun Ling, Yunxiang Wang, Zhonghua Ou

arxiv:1910.13040 v1 · 2019-10-29 · quant-ph · physics.ins-det · 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{X4AQXPEBYHOGWAQXXX2SXLXKFP}

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	2026-07-05T00:15:26.447056Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf010bbc81c1dc6b0217bdf52baeea2be98bc3fa4c18907f368ded0d1688bbb3

Aliases

arxiv: 1910.13040 · arxiv_version: 1910.13040v1 · doi: 10.48550/arxiv.1910.13040 · pith_short_12: X4AQXPEBYHOG · pith_short_16: X4AQXPEBYHOGWAQX · pith_short_8: X4AQXPEB

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/X4AQXPEBYHOGWAQXXX2SXLXKFP \
  | 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: bf010bbc81c1dc6b0217bdf52baeea2be98bc3fa4c18907f368ded0d1688bbb3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1ad9e27ea541cc925ad5385266a2e9fbe6aa87f8390f35cbb46fc90255bde45",
    "cross_cats_sorted": [
      "physics.ins-det",
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-10-29T02:23:33Z",
    "title_canon_sha256": "cf1233da6dde7fe80a1001bba5a597c196bd1a150441fffd49b24c68adbbafb4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.13040",
    "kind": "arxiv",
    "version": 1
  }
}