Pith Number

pith:OBV723BV

pith:2019:OBV723BV2WEWUNPUFVE7LEI4ZT

not attested not anchored not stored refs pending

On the Vector Space in Photoplethysmography Imaging

Christian S. Pilz, Steffen Leonhardt, Vladimir Blazek

arxiv:1906.04431 v1 · 2019-06-11 · 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{OBV723BV2WEWUNPUFVE7LEI4ZT}

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	2026-05-17T23:43:39.301713Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

706bfd6c35d5896a35f42d49f5911cccddc086378cdfe86ca37f3a7bb8c851f5

Aliases

arxiv: 1906.04431 · arxiv_version: 1906.04431v1 · doi: 10.48550/arxiv.1906.04431 · pith_short_12: OBV723BV2WEW · pith_short_16: OBV723BV2WEWUNPU · pith_short_8: OBV723BV

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/OBV723BV2WEWUNPUFVE7LEI4ZT \
  | 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: 706bfd6c35d5896a35f42d49f5911cccddc086378cdfe86ca37f3a7bb8c851f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3432572954dedde95d4ef56b14174e7d34c87b1761113eb8bd9c176274884b87",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-06-11T08:08:10Z",
    "title_canon_sha256": "1cdf08de941e253592251b983d2bf8ba2db806999eafe6731ea210fbcc852f95"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.04431",
    "kind": "arxiv",
    "version": 1
  }
}