Pith Number

pith:6AVL4XK3

pith:2018:6AVL4XK3JGR3BGJFFXGM42A3Z2

not attested not anchored not stored refs pending

Optimized Rate-Adaptive Protograph-Based LDPC Codes for Source Coding with Side Information

Elsa Dupraz, Fangping Ye, Karine Amis, Zeina Mheich

arxiv:1808.06509 v1 · 2018-08-20 · 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{6AVL4XK3JGR3BGJFFXGM42A3Z2}

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	2026-05-18T00:07:44.667917Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f02abe5d5b49a3b099252dccce681bce95325eea31ce19141fc8d33a177fae90

Aliases

arxiv: 1808.06509 · arxiv_version: 1808.06509v1 · doi: 10.48550/arxiv.1808.06509 · pith_short_12: 6AVL4XK3JGR3 · pith_short_16: 6AVL4XK3JGR3BGJF · pith_short_8: 6AVL4XK3

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/6AVL4XK3JGR3BGJFFXGM42A3Z2 \
  | 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: f02abe5d5b49a3b099252dccce681bce95325eea31ce19141fc8d33a177fae90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7bcdcfc3f9da080ef6d4cc35eef95f6ee17a44b8ead69d057324d2ed825371e",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-08-20T15:17:14Z",
    "title_canon_sha256": "9f851063820c88f5a4731b7fc5a333b423ff0cdd3d00adb7f5d65709b5c6da63"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.06509",
    "kind": "arxiv",
    "version": 1
  }
}