Pith Number

pith:OEHFQKRM

pith:2019:OEHFQKRMWCEKUVMKXBXTGHFSKM

not attested not anchored not stored refs pending

Query Preserving Watermarking Schemes for Locally Treelike Databases

Agnishom Chattopadhyay, M. Praveen

arxiv:1909.11369 v1 · 2019-09-25 · cs.LO · 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{OEHFQKRMWCEKUVMKXBXTGHFSKM}

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	2026-07-05T00:07:10.597807Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

710e582a2cb088aa558ab86f331cb253336aedabc3023dc014549ea276e67974

Aliases

arxiv: 1909.11369 · arxiv_version: 1909.11369v1 · doi: 10.48550/arxiv.1909.11369 · pith_short_12: OEHFQKRMWCEK · pith_short_16: OEHFQKRMWCEKUVMK · pith_short_8: OEHFQKRM

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/OEHFQKRMWCEKUVMKXBXTGHFSKM \
  | 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: 710e582a2cb088aa558ab86f331cb253336aedabc3023dc014549ea276e67974

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3a3cb99c43d52b42ca01c6e5b55bb94c89e8defca8a35180b4d9ea09ea5d73e",
    "cross_cats_sorted": [
      "cs.DB"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2019-09-25T09:36:39Z",
    "title_canon_sha256": "dd648f917a7bc0dff316c810e119c28233516ca35a02efebb43071a2d3c42c52"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.11369",
    "kind": "arxiv",
    "version": 1
  }
}