Pith Number

pith:O2TFPS4D

pith:2020:O2TFPS4DARO5HCI6KUPKPS5GDZ

not attested not anchored not stored refs pending

Machine learning for nocturnal diagnosis of chronic obstructive pulmonary disease using digital oximetry biomarkers

Daniel Alvarez, Felix del Campo, Jeremy Levy, Joachim A. Behar

arxiv:2012.05492 v1 · 2020-12-10 · eess.SP · 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{O2TFPS4DARO5HCI6KUPKPS5GDZ}

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	2026-07-05T01:58:34.110604Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

76a657cb83045dd3891e551ea7cba61e5a96cb8c2da3ae7436053ceae07f75b2

Aliases

arxiv: 2012.05492 · arxiv_version: 2012.05492v1 · doi: 10.48550/arxiv.2012.05492 · pith_short_12: O2TFPS4DARO5 · pith_short_16: O2TFPS4DARO5HCI6 · pith_short_8: O2TFPS4D

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/O2TFPS4DARO5HCI6KUPKPS5GDZ \
  | 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: 76a657cb83045dd3891e551ea7cba61e5a96cb8c2da3ae7436053ceae07f75b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e38c666f874d62d944b433f3993ec93c887466b1333f231601fc054f43fdf04",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2020-12-10T07:33:59Z",
    "title_canon_sha256": "79b9076f50e12e035cc7cae47129ba17758ec015aa35512bb560e6c06be6a70b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.05492",
    "kind": "arxiv",
    "version": 1
  }
}