Pith Number

pith:XURY56XF

pith:2022:XURY56XFFGWCKF4375NAWDJFAR

not attested not anchored not stored refs pending

Data mining techniques on astronomical spectra data. II : Classification Analysis

Chenhui Shi, Haifeng Yang, Jianghui Cai, Juncheng Duan, Lichan Zhou, Xiaona Yin, Xujun Zhao, Yuqing Yang

arxiv:2212.09286 v1 · 2022-12-19 · astro-ph.IM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XURY56XFFGWCKF4375NAWDJFAR}

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	2026-07-05T05:26:20.584879Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd238efae529ac25179bff5a0b0d250468db33f0ac590f2b0c42d3330bb91981

Aliases

arxiv: 2212.09286 · arxiv_version: 2212.09286v1 · doi: 10.48550/arxiv.2212.09286 · pith_short_12: XURY56XFFGWC · pith_short_16: XURY56XFFGWCKF43 · pith_short_8: XURY56XF

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/XURY56XFFGWCKF4375NAWDJFAR \
  | 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: bd238efae529ac25179bff5a0b0d250468db33f0ac590f2b0c42d3330bb91981

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fabc07964398346ced7124556c04c165772d0c8c7a871b798aebed227cd28221",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2022-12-19T07:59:21Z",
    "title_canon_sha256": "61b89fdba993d683c72e34fc0ec705443b1b4c09e7f17977f5a3d61066ee6b3c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2212.09286",
    "kind": "arxiv",
    "version": 1
  }
}