Pith Number

pith:7T2MVDMM

pith:2017:7T2MVDMMUYYDJEACBIML6GTUMV

not attested not anchored not stored refs pending

Convolutional Polar Codes

Andrew James Ferris, Christoph Hirche, David Poulin

arxiv:1704.00715 v1 · 2017-04-03 · 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{7T2MVDMMUYYDJEACBIML6GTUMV}

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	2026-05-18T00:47:21.513325Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fcf4ca8d8ca6303490020a18bf1a74655156451515379b2ba5232638b9919034

Aliases

arxiv: 1704.00715 · arxiv_version: 1704.00715v1 · doi: 10.48550/arxiv.1704.00715 · pith_short_12: 7T2MVDMMUYYD · pith_short_16: 7T2MVDMMUYYDJEAC · pith_short_8: 7T2MVDMM

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/7T2MVDMMUYYDJEACBIML6GTUMV \
  | 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: fcf4ca8d8ca6303490020a18bf1a74655156451515379b2ba5232638b9919034

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "629c1c1d44bf115e000d7b31a5965f8e0dff6046aa796f824b61c5f202cf7331",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2017-04-03T17:57:34Z",
    "title_canon_sha256": "d2c9aea4983314460da7ca723061187acd4d03a49c080ca5796b6efbe671f157"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.00715",
    "kind": "arxiv",
    "version": 1
  }
}