Pith Number

pith:YUN5CHQV

pith:2019:YUN5CHQVV3LIEIL6U3ZKOGXM2H

not attested not anchored not stored refs pending

Vard{\o}hus Codes: Polar Codes Based on Castle Curves Kernels

Edgar Mart\'inez-Moro, Eduardo Camps, Eliseo Sarmiento

arxiv:1901.06923 v1 · 2019-01-21 · 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{YUN5CHQVV3LIEIL6U3ZKOGXM2H}

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	2026-05-17T23:55:48.686892Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c51bd11e15aed682217ea6f2a71aecd1fe00539f2d9f9d15236a2ff49c8a26a8

Aliases

arxiv: 1901.06923 · arxiv_version: 1901.06923v1 · doi: 10.48550/arxiv.1901.06923 · pith_short_12: YUN5CHQVV3LI · pith_short_16: YUN5CHQVV3LIEIL6 · pith_short_8: YUN5CHQV

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/YUN5CHQVV3LIEIL6U3ZKOGXM2H \
  | 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: c51bd11e15aed682217ea6f2a71aecd1fe00539f2d9f9d15236a2ff49c8a26a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1886ed09adf0e9619dfe630068a1f6dc6d8df3709efbd1eab909f9f97e53f1bd",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-01-21T13:24:25Z",
    "title_canon_sha256": "ab993554548fd45b6888a3e2c54d45a8dbb9dd2e135ed13462c9c77ce146c2a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.06923",
    "kind": "arxiv",
    "version": 1
  }
}