Pith Number

pith:3TD3RMTS

pith:2012:3TD3RMTSJVK4GKZ2V337ZNWOZE

not attested not anchored not stored refs pending

New Combinatorial Construction Techniques for Low-Density Parity-Check Codes and Systematic Repeat-Accumulate Codes

Alexander Gruner, Michael Huber

arxiv:1203.6566 v2 · 2012-03-29 · cs.IT · cs.DM · math.CO · 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{3TD3RMTSJVK4GKZ2V337ZNWOZE}

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	2026-05-18T00:12:01.399040Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dcc7b8b2724d55c32b3aaef7fcb6cec92bb5d125ac945bd7171b2b0ffd78f51a

Aliases

arxiv: 1203.6566 · arxiv_version: 1203.6566v2 · doi: 10.48550/arxiv.1203.6566 · pith_short_12: 3TD3RMTSJVK4 · pith_short_16: 3TD3RMTSJVK4GKZ2 · pith_short_8: 3TD3RMTS

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/3TD3RMTSJVK4GKZ2V337ZNWOZE \
  | 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: dcc7b8b2724d55c32b3aaef7fcb6cec92bb5d125ac945bd7171b2b0ffd78f51a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b318343558ad61d711d71ffdb09ca0c869e7dacd059ee077d1006c39af1f971",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-03-29T15:56:15Z",
    "title_canon_sha256": "380c6300d0fde7ce8c0cc45cc4333ab76510f29ec6256e1f34241e84145d1b38"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.6566",
    "kind": "arxiv",
    "version": 2
  }
}