Pith Number

pith:YJFS2KE7

pith:2019:YJFS2KE7TMFWMF7LWR3HPWX3XC

not attested not anchored not stored refs pending

A modified method for determining the FRD and length properties of optical fibres in astronomy

A-Li Luo, Gang Wang, Jian Li, Shuqing Wang, Weimin Sun, Yunxiang Yan, Zhenyu Ma

arxiv:1912.11304 v1 · 2019-12-24 · astro-ph.IM · 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{YJFS2KE7TMFWMF7LWR3HPWX3XC}

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	2026-07-05T00:28:18.944902Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c24b2d289f9b0b6617ebb47677dafbb8a31a24ae7ebc42230522cf5de63c10f6

Aliases

arxiv: 1912.11304 · arxiv_version: 1912.11304v1 · doi: 10.48550/arxiv.1912.11304 · pith_short_12: YJFS2KE7TMFW · pith_short_16: YJFS2KE7TMFWMF7L · pith_short_8: YJFS2KE7

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/YJFS2KE7TMFWMF7LWR3HPWX3XC \
  | 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: c24b2d289f9b0b6617ebb47677dafbb8a31a24ae7ebc42230522cf5de63c10f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8c744c854dccc5ff92b6d0fbaa01c232460e31988ef726f8642e4a790411724",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-12-24T11:53:31Z",
    "title_canon_sha256": "9d69307f390cffa10f629d4e704560a5d5b4c10cf80f8b94948bf3320cdb254a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.11304",
    "kind": "arxiv",
    "version": 1
  }
}