Pith Number

pith:NFQQ3J2C

pith:2015:NFQQ3J2CWQMJKD5QQ2VF6GTCDW

not attested not anchored not stored refs pending

XFT: Practical Fault Tolerance Beyond Crashes

Christian Cachin, Marko Vukoli\'c, Paolo Viotti, Shengyun Liu, Vivien Qu\'ema

arxiv:1502.05831 v3 · 2015-02-20 · cs.DC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NFQQ3J2CWQMJKD5QQ2VF6GTCDW}

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	2026-05-18T00:59:59.170590Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69610da742b418950fb086aa5f1a621d9689943b7d8923deab8e6ec651851223

Aliases

arxiv: 1502.05831 · arxiv_version: 1502.05831v3 · doi: 10.48550/arxiv.1502.05831 · pith_short_12: NFQQ3J2CWQMJ · pith_short_16: NFQQ3J2CWQMJKD5Q · pith_short_8: NFQQ3J2C

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/NFQQ3J2CWQMJKD5QQ2VF6GTCDW \
  | 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: 69610da742b418950fb086aa5f1a621d9689943b7d8923deab8e6ec651851223

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc925149f201b3b27e6a4bd695e6ab658cfa5c5b9ea060e069875291937b393e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2015-02-20T11:15:45Z",
    "title_canon_sha256": "24fdc841c93de3067d701d4fe73a50d56519192e16cad2afce5c69bc7f5e826b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.05831",
    "kind": "arxiv",
    "version": 3
  }
}