Pith Number

pith:M6C46MLV

pith:2017:M6C46MLVH4OGWUCQ4DW7JRJF2V

not attested not anchored not stored refs pending

Universal Sparse Superposition Codes with Spatial Coupling and GAMP Decoding

Jean Barbier, Mohamad Dia, Nicolas Macris

arxiv:1707.04203 v2 · 2017-07-13 · 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{M6C46MLVH4OGWUCQ4DW7JRJF2V}

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	2026-05-18T00:01:15.367911Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6785cf31753f1c6b5050e0edf4c525d57ebd0146f6eac3fb331594ca5396ec74

Aliases

arxiv: 1707.04203 · arxiv_version: 1707.04203v2 · doi: 10.48550/arxiv.1707.04203 · pith_short_12: M6C46MLVH4OG · pith_short_16: M6C46MLVH4OGWUCQ · pith_short_8: M6C46MLV

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/M6C46MLVH4OGWUCQ4DW7JRJF2V \
  | 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: 6785cf31753f1c6b5050e0edf4c525d57ebd0146f6eac3fb331594ca5396ec74

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6b44879e4400dc3a2d55eb223017455fbaf1b2fde838fd6126cdba4637e8cd8",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2017-07-13T16:26:31Z",
    "title_canon_sha256": "64729778048d9e013276efed0464fb8a90589feaa52f1a137f1017a378a2153e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.04203",
    "kind": "arxiv",
    "version": 2
  }
}