Pith Number

pith:CTSWBFNK

pith:2026:CTSWBFNKOP46VXZIKAQ42IOZRI

not attested not anchored not stored refs pending

A Skin-Tone-Aware Dual-Representation Remote Photoplethysmography Framework for Contactless Respiratory Rate Estimation

Anup Kumar Gupta, Pasi Liljeberg, Puneet Gupta, Trishna Saikia

arxiv:2606.21511 v1 · 2026-06-19 · eess.IV · 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{CTSWBFNKOP46VXZIKAQ42IOZRI}

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	2026-06-23T01:13:13.048921Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

14e56095aa73f9eadf285021cd21d98a01ce31d10971337034060d028b24f40d

Aliases

arxiv: 2606.21511 · arxiv_version: 2606.21511v1 · doi: 10.48550/arxiv.2606.21511 · pith_short_12: CTSWBFNKOP46 · pith_short_16: CTSWBFNKOP46VXZI · pith_short_8: CTSWBFNK

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/CTSWBFNKOP46VXZIKAQ42IOZRI \
  | 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: 14e56095aa73f9eadf285021cd21d98a01ce31d10971337034060d028b24f40d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "383a0b982fd8e06d82c832388254bc7ceea4646b9a14e390702c7bc790bc3598",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2026-06-19T15:06:34Z",
    "title_canon_sha256": "69eaa8074149a8bcd3a6840d2707789dbb15259e404ad900f27c9818393753a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.21511",
    "kind": "arxiv",
    "version": 1
  }
}