Pith Number

pith:2KZAPFPB

pith:2018:2KZAPFPBHVWA6AH6VB4BQ2JAGW

not attested not anchored not stored refs pending

Invisible Pixels Are Dead, Long Live Invisible Pixels!

Jukka Ruohonen, Ville Lepp\"anen

arxiv:1808.07293 v1 · 2018-08-22 · cs.CY · cs.NI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2KZAPFPBHVWA6AH6VB4BQ2JAGW}

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	2026-05-18T00:01:52.956835Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2b20795e13d6c0f00fea878186920359fca79dfc3d8017901ded97fc5a6e3b8

Aliases

arxiv: 1808.07293 · arxiv_version: 1808.07293v1 · doi: 10.48550/arxiv.1808.07293 · pith_short_12: 2KZAPFPBHVWA · pith_short_16: 2KZAPFPBHVWA6AH6 · pith_short_8: 2KZAPFPB

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/2KZAPFPBHVWA6AH6VB4BQ2JAGW \
  | 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: d2b20795e13d6c0f00fea878186920359fca79dfc3d8017901ded97fc5a6e3b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab835d91be57485be78662886d477ad35c601af43a7812fe6bb7045a7d8e1882",
    "cross_cats_sorted": [
      "cs.NI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2018-08-22T09:29:52Z",
    "title_canon_sha256": "9a66006a899a029815765a46a8c7cabea28f25304d7b1e9fb867a4eda681c063"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.07293",
    "kind": "arxiv",
    "version": 1
  }
}