Pith Number

pith:QQ7ZP6SL

pith:2017:QQ7ZP6SLBYMU26L2A7MLUERO2I

not attested not anchored not stored refs pending

Concatenated LDPC-Polar Codes Decoding Through Belief Propagation

Chi-Ying Tsui, Ji Chen, Syed Mohsin Abbas, YouZhe Fan

arxiv:1703.05542 v1 · 2017-03-16 · 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{QQ7ZP6SLBYMU26L2A7MLUERO2I}

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	2026-05-18T00:48:33.972265Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

843f97fa4b0e194d797a07d8ba122ed22fe76b525a83e53dc6debffb9556e7a6

Aliases

arxiv: 1703.05542 · arxiv_version: 1703.05542v1 · doi: 10.48550/arxiv.1703.05542 · pith_short_12: QQ7ZP6SLBYMU · pith_short_16: QQ7ZP6SLBYMU26L2 · pith_short_8: QQ7ZP6SL

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/QQ7ZP6SLBYMU26L2A7MLUERO2I \
  | 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: 843f97fa4b0e194d797a07d8ba122ed22fe76b525a83e53dc6debffb9556e7a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1cdf8f084b1b3bdb5b3d99e04f1bf3b329448aba3b5a0c570f99b037c44767dc",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2017-03-16T10:02:42Z",
    "title_canon_sha256": "0174efb571a41ac56d20917590cf51870b1c0ae6026e1311d41435769de86eef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.05542",
    "kind": "arxiv",
    "version": 1
  }
}