Pith Number

pith:BZWEHKU5

pith:2021:BZWEHKU56IP5DQLOV6D5VNSF7M

not attested not anchored not stored refs pending

FedChain: Chained Algorithms for Near-Optimal Communication Cost in Federated Learning

Charlie Hou, Giulia Fanti, Kiran K. Thekumparampil, Sewoong Oh

arxiv:2108.06869 v5 · 2021-08-16 · cs.LG · cs.DC · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BZWEHKU56IP5DQLOV6D5VNSF7M}

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	2026-07-05T06:01:09.512785Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0e6c43aa9df21fd1c16eaf87dab645fb3f0d6afd979e8c1bcf6cd9fd992b138a

Aliases

arxiv: 2108.06869 · arxiv_version: 2108.06869v5 · doi: 10.48550/arxiv.2108.06869 · pith_short_12: BZWEHKU56IP5 · pith_short_16: BZWEHKU56IP5DQLO · pith_short_8: BZWEHKU5

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/BZWEHKU56IP5DQLOV6D5VNSF7M \
  | 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: 0e6c43aa9df21fd1c16eaf87dab645fb3f0d6afd979e8c1bcf6cd9fd992b138a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b521b26e541762eb602136a0ac0ea51925ab5ccada8b1228697156e08061e33d",
    "cross_cats_sorted": [
      "cs.DC",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-08-16T02:57:06Z",
    "title_canon_sha256": "9be634d5b4cb17eaa574b2ec38dd3575fdbf919cd8953e847b224c180f9da87e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.06869",
    "kind": "arxiv",
    "version": 5
  }
}