Pith Number

pith:DUFWTTIA

pith:2023:DUFWTTIAX5RIY3TSGVS2TFDWZC

not attested not anchored not stored refs pending

Proof-of-Contribution-Based Design for Collaborative Machine Learning on Blockchain

Ali Farahanchi, Baturalp Buyukates, Chaoyang He, Jieyi Long, Salman Avestimehr, Shanshan Han, Yupeng Zhang, Zhiyong Fang

arxiv:2302.14031 v1 · 2023-02-27 · cs.CR · cs.DC · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DUFWTTIAX5RIY3TSGVS2TFDWZC}

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	2026-07-05T05:45:53.668782Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d0b69cd00bf628c6e723565a99476c8b2ae4d9311d176662bcff7e203162219

Aliases

arxiv: 2302.14031 · arxiv_version: 2302.14031v1 · doi: 10.48550/arxiv.2302.14031 · pith_short_12: DUFWTTIAX5RI · pith_short_16: DUFWTTIAX5RIY3TS · pith_short_8: DUFWTTIA

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/DUFWTTIAX5RIY3TSGVS2TFDWZC \
  | 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: 1d0b69cd00bf628c6e723565a99476c8b2ae4d9311d176662bcff7e203162219

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "925e195f9532bc819bc209b98bbc3b1f636a758fb562b9d9f6bd7ca101afa886",
    "cross_cats_sorted": [
      "cs.DC",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2023-02-27T18:43:11Z",
    "title_canon_sha256": "1e4ecfce4faf6e22bb7cbf9896422dd71c4597533a4b70f32b601b9e2480eec2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2302.14031",
    "kind": "arxiv",
    "version": 1
  }
}