Pith Number

pith:RAC6WWDK

pith:2017:RAC6WWDKOPH3B36H2VVY5ZDMVS

not attested not anchored not stored refs pending

Pay-with-a-Selfie, a human-centred digital payment system

Chan Yeob Yeun, Dina Shehada, Ernesto Damiani, Fulvio Frati, Joel T. Honsou, Perpetus Jacques Houngbo, Rasool Asal, Stelvio Cimato

arxiv:1706.07187 v1 · 2017-06-22 · cs.ET

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RAC6WWDKOPH3B36H2VVY5ZDMVS}

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	2026-05-18T00:41:52.398506Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8805eb586a73cfb0efc7d56b8ee46cac869eab87e8ae72d6f367405a12c67f65

Aliases

arxiv: 1706.07187 · arxiv_version: 1706.07187v1 · doi: 10.48550/arxiv.1706.07187 · pith_short_12: RAC6WWDKOPH3 · pith_short_16: RAC6WWDKOPH3B36H · pith_short_8: RAC6WWDK

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/RAC6WWDKOPH3B36H2VVY5ZDMVS \
  | 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: 8805eb586a73cfb0efc7d56b8ee46cac869eab87e8ae72d6f367405a12c67f65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2590186bea65ee8da84dff8877b081843a44b8de87cf832ed4d884093f070d86",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.ET",
    "submitted_at": "2017-06-22T07:26:02Z",
    "title_canon_sha256": "2971ca71ba22de39a5d8afa63da3a68e8109be0d897122efe0e307c8631809ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.07187",
    "kind": "arxiv",
    "version": 1
  }
}