Pith Number

pith:IVU2Y337

pith:2018:IVU2Y337YILGTBPG3RUPCMXSPF

not attested not anchored not stored refs pending

LEDAkem: a post-quantum key encapsulation mechanism based on QC-LDPC codes

Alessandro Barenghi, Franco Chiaraluce, Gerardo Pelosi, Marco Baldi, Paolo Santini

arxiv:1801.08867 v1 · 2018-01-26 · cs.CR · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IVU2Y337YILGTBPG3RUPCMXSPF}

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	2026-05-18T00:25:02.810475Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4569ac6f7fc2166985e6dc68f132f2794430846d5089f98b91ca13f9e97d4020

Aliases

arxiv: 1801.08867 · arxiv_version: 1801.08867v1 · doi: 10.48550/arxiv.1801.08867 · pith_short_12: IVU2Y337YILG · pith_short_16: IVU2Y337YILGTBPG · pith_short_8: IVU2Y337

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/IVU2Y337YILGTBPG3RUPCMXSPF \
  | 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: 4569ac6f7fc2166985e6dc68f132f2794430846d5089f98b91ca13f9e97d4020

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9f263ff6000378dca666bd59e30eb4dec042e0e4f2f33c6d2e6fdef01c63f84",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2018-01-26T15:56:15Z",
    "title_canon_sha256": "280d0a82cf1ac9b972ef6e31f44f715b68465c901db53f413229c4e694d2a1a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.08867",
    "kind": "arxiv",
    "version": 1
  }
}