Pith Number

pith:NGB76MZM

pith:2017:NGB76MZMLZNSNTBT3TTAHITTH7

not attested not anchored not stored refs pending

Recursive Programs for Document Spanners

Balder ten Cate, Benny Kimelfeld, Liat Peterfreund, Ronald Fagin

arxiv:1712.08198 v3 · 2017-12-21 · 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{NGB76MZMLZNSNTBT3TTAHITTH7}

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	2026-05-18T00:15:09.907089Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6983ff332c5e5b26cc33dce603a2733fd94e793a55d589616e758269c87cddca

Aliases

arxiv: 1712.08198 · arxiv_version: 1712.08198v3 · doi: 10.48550/arxiv.1712.08198 · pith_short_12: NGB76MZMLZNS · pith_short_16: NGB76MZMLZNSNTBT · pith_short_8: NGB76MZM

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/NGB76MZMLZNSNTBT3TTAHITTH7 \
  | 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: 6983ff332c5e5b26cc33dce603a2733fd94e793a55d589616e758269c87cddca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c0e9b2d762eae0fdbcf9d9721b8e1dcda7c9c4bc71a85e21995226f3ed71a4f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2017-12-21T20:22:47Z",
    "title_canon_sha256": "8f0e9ed6f67093c280cc55c7ad52d0b2651c1704c97c97e7633fec32615af7fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.08198",
    "kind": "arxiv",
    "version": 3
  }
}