Pith Number

pith:WTKNBP2R

pith:2014:WTKNBP2RWOWVQ2I2YAYH7WHWTT

not attested not anchored not stored refs pending

TROIKA: A General Framework for Heart Rate Monitoring Using Wrist-Type Photoplethysmographic Signals During Intensive Physical Exercise

Benyuan Liu, Zhilin Zhang, Zhouyue Pi

arxiv:1409.5181 v3 · 2014-09-18 · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WTKNBP2RWOWVQ2I2YAYH7WHWTT}

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	2026-05-18T02:27:50.973448Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4d4d0bf51b3ad58691ac0307fd8f69cf4b2c9b2c3a672613c916dafe184b066

Aliases

arxiv: 1409.5181 · arxiv_version: 1409.5181v3 · doi: 10.48550/arxiv.1409.5181 · pith_short_12: WTKNBP2RWOWV · pith_short_16: WTKNBP2RWOWVQ2I2 · pith_short_8: WTKNBP2R

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/WTKNBP2RWOWVQ2I2YAYH7WHWTT \
  | 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: b4d4d0bf51b3ad58691ac0307fd8f69cf4b2c9b2c3a672613c916dafe184b066

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06017c3bbf82aee93b618d98cee932712db3bcc5832b9060be08014a531469c0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2014-09-18T03:24:49Z",
    "title_canon_sha256": "e3d5c509d7dd0ae941bd1987fe795da1c2d8f4b8f2ba0d169dc8e820dd90f599"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.5181",
    "kind": "arxiv",
    "version": 3
  }
}