Pith Number

pith:XPCZJUTR

pith:2018:XPCZJUTREBJEFPHYNL6TWVALQ6

not attested not anchored not stored refs pending

SuperPCA: A Superpixelwise PCA Approach for Unsupervised Feature Extraction of Hyperspectral Imagery

Chen Chen, Jiayi Ma, Junjun Jiang, Lizhe Wang, Zhihua Cai, Zhongyuan Wang

arxiv:1806.09807 v2 · 2018-06-26 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XPCZJUTREBJEFPHYNL6TWVALQ6}

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	2026-05-18T00:05:40.873301Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbc594d271205242bcf86afd3b540b87818eb599bd8b6c8dfebb329c00f118cd

Aliases

arxiv: 1806.09807 · arxiv_version: 1806.09807v2 · doi: 10.48550/arxiv.1806.09807 · pith_short_12: XPCZJUTREBJE · pith_short_16: XPCZJUTREBJEFPHY · pith_short_8: XPCZJUTR

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/XPCZJUTREBJEFPHYNL6TWVALQ6 \
  | 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: bbc594d271205242bcf86afd3b540b87818eb599bd8b6c8dfebb329c00f118cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1641a900c2f9c030abc75980ccca42eaeb85e10b7d19e720117b3bb1f7a6d30d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-06-26T06:38:07Z",
    "title_canon_sha256": "b1ba32990bb12917e5e695f8dc80ce306a647f0b730290475a6357cb44eb1991"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.09807",
    "kind": "arxiv",
    "version": 2
  }
}