Pith Number

pith:ZOUQXACB

pith:2013:ZOUQXACBQRO2D3L2AARZ75CAGX

not attested not anchored not stored refs pending

Low-cost photoplethysmograph solutions using the Raspberry Pi

Tamas Nagy, Zoltan gingl

arxiv:1310.2717 v1 · 2013-10-10 · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZOUQXACBQRO2D3L2AARZ75CAGX}

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	2026-05-18T02:56:21.047539Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cba90b8041845da1ed7a00239ff44035caa3fd39df5c7bab28f259f4d5b3d51f

Aliases

arxiv: 1310.2717 · arxiv_version: 1310.2717v1 · doi: 10.48550/arxiv.1310.2717 · pith_short_12: ZOUQXACBQRO2 · pith_short_16: ZOUQXACBQRO2D3L2 · pith_short_8: ZOUQXACB

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/ZOUQXACBQRO2D3L2AARZ75CAGX \
  | 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: cba90b8041845da1ed7a00239ff44035caa3fd39df5c7bab28f259f4d5b3d51f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e05b9e1ab01d978e25b6045b50cdb9eeb76a7ade5031c37ed035cb1ddb12f8f9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2013-10-10T06:51:20Z",
    "title_canon_sha256": "6b3afa29ec510137747a8bce12a69fc9289b14e95b55d13df941141a11a88b57"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.2717",
    "kind": "arxiv",
    "version": 1
  }
}