Pith Number

pith:W7Z52LFI

pith:2026:W7Z52LFIVBCHP2ZJJPMHDVPF6S

not attested not anchored not stored refs pending

Spatially Coupled Sparse Code Multiple Access (SC-SCMA): A Spectral Graph Approach

Pei Xiao, Qu Luo, Yiming Gui, Zilong Liu

arxiv:2606.31743 v1 · 2026-06-30 · eess.SP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W7Z52LFIVBCHP2ZJJPMHDVPF6S}

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	2026-07-01T01:18:13.427947Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7f3dd2ca8a84477eb294bd871d5e5f4957bf3b23d3d18783ef046460ac53ded

Aliases

arxiv: 2606.31743 · arxiv_version: 2606.31743v1 · doi: 10.48550/arxiv.2606.31743 · pith_short_12: W7Z52LFIVBCH · pith_short_16: W7Z52LFIVBCHP2ZJ · pith_short_8: W7Z52LFI

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/W7Z52LFIVBCHP2ZJJPMHDVPF6S \
  | 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: b7f3dd2ca8a84477eb294bd871d5e5f4957bf3b23d3d18783ef046460ac53ded

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e8874164ddb668ea0e0611c61796aa7cd8305f59376078eb4fdd91c07b6ab72",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2026-06-30T14:35:58Z",
    "title_canon_sha256": "6072f0a28bd915aface707b65f9536a03981e3b97f82b547299f485ef4b6c3a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.31743",
    "kind": "arxiv",
    "version": 1
  }
}