Pith Number

pith:NASNPCFF

pith:2012:NASNPCFFV36ZKE47N23BSVTW55

not attested not anchored not stored refs pending

Optimal Algorithms for Crawling a Hidden Database in the Web

Cheng Sheng, Nan Zhang, Xin Jin, Yufei Tao

arxiv:1208.0075 v1 · 2012-08-01 · cs.DB

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NASNPCFFV36ZKE47N23BSVTW55}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T03:49:45.087115Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6824d788a5aefd95139f6eb6195676ef67ac35c85b2d29ccd3c8cb527a42fa05

Aliases

arxiv: 1208.0075 · arxiv_version: 1208.0075v1 · doi: 10.48550/arxiv.1208.0075 · pith_short_12: NASNPCFFV36Z · pith_short_16: NASNPCFFV36ZKE47 · pith_short_8: NASNPCFF

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/NASNPCFFV36ZKE47N23BSVTW55 \
  | 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: 6824d788a5aefd95139f6eb6195676ef67ac35c85b2d29ccd3c8cb527a42fa05

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7cb551ffbb3e0f97e81fb3c767f018c1329f6c2b521b9ee1c39d74543edd9b97",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2012-08-01T03:43:52Z",
    "title_canon_sha256": "b8fa5a027523f0eea6b584622f9994fea15fc277fb75f1f4424f914a66675c17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.0075",
    "kind": "arxiv",
    "version": 1
  }
}