Pith Number

pith:B7KVG3RX

pith:2020:B7KVG3RXKV44M2ZQIOLIEQNNVH

not attested not anchored not stored refs pending

A Photo-Based Mobile Crowdsourcing Framework for Event Reporting

Aymen Hamrouni, Hakim Ghazzai, Mounir Frikha, Yehia Massoud

arxiv:2004.13251 v2 · 2020-04-28 · cs.CY · cs.LG · cs.SY · eess.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{B7KVG3RXKV44M2ZQIOLIEQNNVH}

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	2026-07-05T00:59:58.850536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0fd5536e375579c66b3043968241ada9d1eaee7d876c134fec50cd60a0d0488d

Aliases

arxiv: 2004.13251 · arxiv_version: 2004.13251v2 · doi: 10.48550/arxiv.2004.13251 · pith_short_12: B7KVG3RXKV44 · pith_short_16: B7KVG3RXKV44M2ZQ · pith_short_8: B7KVG3RX

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/B7KVG3RXKV44M2ZQIOLIEQNNVH \
  | 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: 0fd5536e375579c66b3043968241ada9d1eaee7d876c134fec50cd60a0d0488d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ebccd1e019254a11fcb1356ac4a394048cfff808b7a673fe5cf686a97eab935e",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.SY",
      "eess.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2020-04-28T02:44:19Z",
    "title_canon_sha256": "3a0e370bbf5e8df763a8202191087312267f8a7be770cc414383f1b223fe4cec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.13251",
    "kind": "arxiv",
    "version": 2
  }
}