Pith Number

pith:W3PXR3ZV

pith:2019:W3PXR3ZVXTTMDX3Y7K2L7PLHUB

not attested not anchored not stored refs pending

A new watermarking method to protect blockchain records comprising handwritten files

Evgeni Stolov, Rustam Latypov

arxiv:1901.03065 v1 · 2019-01-10 · 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{W3PXR3ZVXTTMDX3Y7K2L7PLHUB}

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	2026-05-17T23:56:35.645566Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6df78ef35bce6c1df78fab4bfbd67a052a1a16c382daa59c581a2f9832d35f1

Aliases

arxiv: 1901.03065 · arxiv_version: 1901.03065v1 · doi: 10.48550/arxiv.1901.03065 · pith_short_12: W3PXR3ZVXTTM · pith_short_16: W3PXR3ZVXTTMDX3Y · pith_short_8: W3PXR3ZV

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/W3PXR3ZVXTTMDX3Y7K2L7PLHUB \
  | 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: b6df78ef35bce6c1df78fab4bfbd67a052a1a16c382daa59c581a2f9832d35f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0fe00c1d52201a7f818c0b0f9d2bdf1d8080f89d5601b55c7106feb25054707b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2019-01-10T09:08:32Z",
    "title_canon_sha256": "6392542c7efa2716eaad225fe4645cf0ae4a66f5e49928b46f28189cc2c6cb5e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.03065",
    "kind": "arxiv",
    "version": 1
  }
}