Pith Number

pith:MDDXFXOR

pith:2021:MDDXFXORFI22GT6LEIYBCW3IX3

not attested not anchored not stored refs pending

Class-Wise Principal Component Analysis for hyperspectral image feature extraction

Dimitra Koumoutsou, Eleni Charou, Georgios Siolas, Giorgos Stamou

arxiv:2104.04496 v1 · 2021-04-09 · 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{MDDXFXORFI22GT6LEIYBCW3IX3}

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	2026-07-05T02:30:39.701796Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60c772ddd12a35a34fcb2230115b68bec13eeb9e7cc96a954ef7b62f837cc16e

Aliases

arxiv: 2104.04496 · arxiv_version: 2104.04496v1 · doi: 10.48550/arxiv.2104.04496 · pith_short_12: MDDXFXORFI22 · pith_short_16: MDDXFXORFI22GT6L · pith_short_8: MDDXFXOR

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/MDDXFXORFI22GT6LEIYBCW3IX3 \
  | 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: 60c772ddd12a35a34fcb2230115b68bec13eeb9e7cc96a954ef7b62f837cc16e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a008a2914ac6cbec14658bcaffff1a8aea88bf9defd1106539e47818c797afb",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-04-09T17:25:11Z",
    "title_canon_sha256": "3845b7219a234e859506db6e107b82a6c230eeeb5f50d4d8931d9d33c1d45d23"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.04496",
    "kind": "arxiv",
    "version": 1
  }
}