Pith Number

pith:DOC2OB3T

pith:2019:DOC2OB3TWCWB5HZKGQCMWLNWCP

not attested not anchored not stored refs pending

A Finite-Length Construction of Irregular Spatially-Coupled Codes

Homa Esfahanizadeh, Lara Dolecek, Ruiyi Wu

arxiv:1906.05955 v1 · 2019-06-13 · 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{DOC2OB3TWCWB5HZKGQCMWLNWCP}

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	2026-05-17T23:43:20.211094Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b85a70773b0ac1e9f2a3404cb2db613cf5983d0ec16bd713f5cf1c57bf07ef6

Aliases

arxiv: 1906.05955 · arxiv_version: 1906.05955v1 · doi: 10.48550/arxiv.1906.05955 · pith_short_12: DOC2OB3TWCWB · pith_short_16: DOC2OB3TWCWB5HZK · pith_short_8: DOC2OB3T

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/DOC2OB3TWCWB5HZKGQCMWLNWCP \
  | 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: 1b85a70773b0ac1e9f2a3404cb2db613cf5983d0ec16bd713f5cf1c57bf07ef6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "864f179a707765e558f659c538292c43da33378c9d33b037fbca193ee57faa01",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-06-13T22:37:59Z",
    "title_canon_sha256": "5f432e7ac6abdd19164ce6bb5398665808f857a947295ad1de8bae1166f925e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.05955",
    "kind": "arxiv",
    "version": 1
  }
}