Pith Number

pith:3K7XPTNC

pith:2017:3K7XPTNCJMQADVJYETFUGHVJFV

not attested not anchored not stored refs pending

On Puncturing Strategies for Polar Codes

David Declercq, Ludovic Chandesris, Valentin Savin

arxiv:1701.04746 v1 · 2017-01-17 · 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{3K7XPTNCJMQADVJYETFUGHVJFV}

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	2026-05-18T00:52:42.723735Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dabf77cda24b2001d53824cb431ea92d474c9279ecc1720164686f8b9078c432

Aliases

arxiv: 1701.04746 · arxiv_version: 1701.04746v1 · doi: 10.48550/arxiv.1701.04746 · pith_short_12: 3K7XPTNCJMQA · pith_short_16: 3K7XPTNCJMQADVJY · pith_short_8: 3K7XPTNC

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/3K7XPTNCJMQADVJYETFUGHVJFV \
  | 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: dabf77cda24b2001d53824cb431ea92d474c9279ecc1720164686f8b9078c432

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ec0bbc16973763fedc972798b3f185784fdc88d29aca40e2bc8659fc13c1fe7",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2017-01-17T16:15:21Z",
    "title_canon_sha256": "33edd5e8e1ee0fafb7131034de215e09821d0aaff74a476768fdf0229251bac3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.04746",
    "kind": "arxiv",
    "version": 1
  }
}