Pith Number

pith:U6D2EZVW

pith:2016:U6D2EZVWHELMCY42NPGU24UJKI

not attested not anchored not stored refs pending

QFix: Diagnosing errors through query histories

Alexandra Meliou, Eugene Wu, Xiaolan Wang

arxiv:1601.07539 v2 · 2016-01-27 · cs.DB

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U6D2EZVWHELMCY42NPGU24UJKI}

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	2026-05-18T01:20:55.425130Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a787a266b63916c1639a6bcd4d728952117a6f55045cf80123e607c78e7f73f2

Aliases

arxiv: 1601.07539 · arxiv_version: 1601.07539v2 · doi: 10.48550/arxiv.1601.07539 · pith_short_12: U6D2EZVWHELM · pith_short_16: U6D2EZVWHELMCY42 · pith_short_8: U6D2EZVW

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/U6D2EZVWHELMCY42NPGU24UJKI \
  | 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: a787a266b63916c1639a6bcd4d728952117a6f55045cf80123e607c78e7f73f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78e27b0e546e5763f933889764b11553733a80b5ba7fa8d56cfbcc5f887f031d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2016-01-27T20:40:06Z",
    "title_canon_sha256": "3510f5d45067575cda6935f47b789c4231c4c82531dea669928d92fea3fa27b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.07539",
    "kind": "arxiv",
    "version": 2
  }
}