Pith Number

pith:7XN4LEFO

pith:2018:7XN4LEFOVPZ43UFJZM44OSKOQC

not attested not anchored not stored refs pending

Smoke: Fine-grained Lineage at Interactive Speed

Eugene Wu, Fotis Psallidas

arxiv:1801.07237 v1 · 2018-01-22 · 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{7XN4LEFOVPZ43UFJZM44OSKOQC}

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	2026-05-18T00:25:21.835660Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fddbc590aeabf3cdd0a9cb39c7494e80bd0793752c5e08f629bb7732f8a8606e

Aliases

arxiv: 1801.07237 · arxiv_version: 1801.07237v1 · doi: 10.48550/arxiv.1801.07237 · pith_short_12: 7XN4LEFOVPZ4 · pith_short_16: 7XN4LEFOVPZ43UFJ · pith_short_8: 7XN4LEFO

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/7XN4LEFOVPZ43UFJZM44OSKOQC \
  | 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: fddbc590aeabf3cdd0a9cb39c7494e80bd0793752c5e08f629bb7732f8a8606e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5bd38131314a0cca5365f05b6247b56f9cbe913a7cc6a968f0110337534d001f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2018-01-22T18:39:18Z",
    "title_canon_sha256": "7af605d6a123f791486239a5bdcc641c07a4b65a299c3fb81bd8f3959da6fdd0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.07237",
    "kind": "arxiv",
    "version": 1
  }
}