Pith Number

pith:7XKEXKGH

pith:2021:7XKEXKGH6BP2VRNCVC5XYUP6HA

not attested not anchored not stored refs pending

Tiled sparse coding in eigenspaces for the COVID-19 diagnosis in chest X-ray images

Andr\'es Ortiz, Javier Ram\'irez, Juan E. Arco, Juan M Gorriz

arxiv:2106.14724 v1 · 2021-06-28 · eess.IV · cs.CV · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7XKEXKGH6BP2VRNCVC5XYUP6HA}

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	2026-07-05T02:52:53.334283Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fdd44ba8c7f05faac5a2a8bb7c51fe38282923a007b189c1a0e4bf662577d037

Aliases

arxiv: 2106.14724 · arxiv_version: 2106.14724v1 · doi: 10.48550/arxiv.2106.14724 · pith_short_12: 7XKEXKGH6BP2 · pith_short_16: 7XKEXKGH6BP2VRNC · pith_short_8: 7XKEXKGH

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/7XKEXKGH6BP2VRNCVC5XYUP6HA \
  | 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: fdd44ba8c7f05faac5a2a8bb7c51fe38282923a007b189c1a0e4bf662577d037

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c8387e6264474315d118d0de19bf31729c7c63725ab76b311e2564d5fde1dda",
    "cross_cats_sorted": [
      "cs.CV",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2021-06-28T13:50:31Z",
    "title_canon_sha256": "54a7a46d54eeca740637c036911cc37a8dc70eb79168275585bef011bdb69b94"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.14724",
    "kind": "arxiv",
    "version": 1
  }
}