Pith Number

pith:MH7EPHJT

pith:2021:MH7EPHJTHAP4TAIQRSMXJRFEYY

not attested not anchored not stored refs pending

Data-Free Evaluation of User Contributions in Federated Learning

Chengfei Lv, Fan Wu, Hongtao Lv, Lifeng Hua, Rongfei Jia, Shaojie Tang, Tie Luo, Zhenzhe Zheng

arxiv:2108.10623 v1 · 2021-08-24 · cs.LG · cs.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MH7EPHJTHAP4TAIQRSMXJRFEYY}

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	2026-07-05T03:08:11.657587Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61fe479d33381fc981108c9974c4a4c61088d3b37b625a3c6d61912303657d63

Aliases

arxiv: 2108.10623 · arxiv_version: 2108.10623v1 · doi: 10.48550/arxiv.2108.10623 · pith_short_12: MH7EPHJTHAP4 · pith_short_16: MH7EPHJTHAP4TAIQ · pith_short_8: MH7EPHJT

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/MH7EPHJTHAP4TAIQRSMXJRFEYY \
  | 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: 61fe479d33381fc981108c9974c4a4c61088d3b37b625a3c6d61912303657d63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cbe3fdb0c5ff23093d2a67b72b7caa71f6a3b4b1d9ccf483f878e8d90a32d704",
    "cross_cats_sorted": [
      "cs.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-08-24T10:17:03Z",
    "title_canon_sha256": "08f7d6a2c1194eceb0e077facd7102a0a5212b52ed09e609c87365d74c969282"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.10623",
    "kind": "arxiv",
    "version": 1
  }
}