Pith Number

pith:3LCHMNYD

pith:2019:3LCHMNYDTYUJDPHUCDPPBCPQVV

not attested not anchored not stored refs pending

Re: What's Up Johnny? -- Covert Content Attacks on Email End-to-End Encryption

Damian Poddebniak, Jens M\"uller, J\"org Schwenk, Marcus Brinkmann, Sebastian Schinzel

arxiv:1904.07550 v2 · 2019-04-16 · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3LCHMNYDTYUJDPHUCDPPBCPQVV}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-17T23:48:19.554906Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dac47637039e2891bcf410def089f0ad517e318e7c5b1b2edf12b80aaf462d0e

Aliases

arxiv: 1904.07550 · arxiv_version: 1904.07550v2 · doi: 10.48550/arxiv.1904.07550 · pith_short_12: 3LCHMNYDTYUJ · pith_short_16: 3LCHMNYDTYUJDPHU · pith_short_8: 3LCHMNYD

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/3LCHMNYDTYUJDPHUCDPPBCPQVV \
  | 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: dac47637039e2891bcf410def089f0ad517e318e7c5b1b2edf12b80aaf462d0e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5096acf687aa36f20740961e00fb22432d359a75c13f28add86c5cd29926f69",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2019-04-16T09:28:06Z",
    "title_canon_sha256": "7d8fcbda797d3dfde567d7b7a94e49a8bdcb22118016f60c0af2ee306805d216"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.07550",
    "kind": "arxiv",
    "version": 2
  }
}