Pith Number

pith:6QBNFAON

pith:2018:6QBNFAONWSBJOEBDVDR6YA5WZQ

not attested not anchored not stored refs pending

An On-line Design of Physical Watermarks

Hanxiao Liu, Jiaqi Yan, Karl Henrik Johansson, Yilin Mo

arxiv:1809.05299 v1 · 2018-09-14 · cs.SY · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6QBNFAONWSBJOEBDVDR6YA5WZQ}

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	2026-05-18T00:05:44.056863Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f402d281cdb482971023a8e3ec03b6cc3fc5184fa693e387b735293dc32c7b1a

Aliases

arxiv: 1809.05299 · arxiv_version: 1809.05299v1 · doi: 10.48550/arxiv.1809.05299 · pith_short_12: 6QBNFAONWSBJ · pith_short_16: 6QBNFAONWSBJOEBD · pith_short_8: 6QBNFAON

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/6QBNFAONWSBJOEBDVDR6YA5WZQ \
  | 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: f402d281cdb482971023a8e3ec03b6cc3fc5184fa693e387b735293dc32c7b1a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e7afec900a2e76d496815a44655d56371895ae017ad2237bdaa023312ce9c96",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2018-09-14T08:19:29Z",
    "title_canon_sha256": "2782d41d1a5a391aa79e9a747d4ad279365d0ac2ed3279ad1ffe5e98cc392e85"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.05299",
    "kind": "arxiv",
    "version": 1
  }
}