Pith Number

pith:WPJ5OD33

pith:2021:WPJ5OD33O5QL4ZJDRZ7DS4MI2G

not attested not anchored not stored refs pending

Secure Watermark for Deep Neural Networks with Multi-task Learning

Fangqi Li, Shilin Wang

arxiv:2103.10021 v3 · 2021-03-18 · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WPJ5OD33O5QL4ZJDRZ7DS4MI2G}

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.

Cited by

1 paper in Pith

PoLO: Proof-of-Learning and Proof-of-Ownership at Once with Chained Watermarking

Receipt and verification

First computed	2026-07-05T03:43:39.626229Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3d3d70f7b7760be65238e7e397188d18770e7f7f7425e5084140944b2c3ae2d

Aliases

arxiv: 2103.10021 · arxiv_version: 2103.10021v3 · doi: 10.48550/arxiv.2103.10021 · pith_short_12: WPJ5OD33O5QL · pith_short_16: WPJ5OD33O5QL4ZJD · pith_short_8: WPJ5OD33

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/WPJ5OD33O5QL4ZJDRZ7DS4MI2G \
  | 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: b3d3d70f7b7760be65238e7e397188d18770e7f7f7425e5084140944b2c3ae2d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c55a64d87834c955210fce5ece607495270943cf036a30772d4094d063056fe7",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2021-03-18T04:56:34Z",
    "title_canon_sha256": "de14b63a3aacc8fe13103c486d8017189f6e4b9604d122a4f684664e63138e0b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.10021",
    "kind": "arxiv",
    "version": 3
  }
}