Pith Number

pith:FUC3CMQV

pith:2025:FUC3CMQVFD43FSCUGMINAFJTVO

not attested not anchored not stored refs pending

Capacity-achieving sparse superposition codes with spatially coupled VAMP decoder

Chaowen Deng, Jie Fan, Panpan Niu, Teng Fu, Yuhao Liu, Zhongyi Huang

arxiv:2504.13601 v1 · 2025-04-18 · 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{FUC3CMQVFD43FSCUGMINAFJTVO}

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	2026-07-05T10:50:58.909616Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d05b1321528f9b2c8543310d01533ab90b4f81afda2a37da21849313be215d8

Aliases

arxiv: 2504.13601 · arxiv_version: 2504.13601v1 · doi: 10.48550/arxiv.2504.13601 · pith_short_12: FUC3CMQVFD43 · pith_short_16: FUC3CMQVFD43FSCU · pith_short_8: FUC3CMQV

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/FUC3CMQVFD43FSCUGMINAFJTVO \
  | 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: 2d05b1321528f9b2c8543310d01533ab90b4f81afda2a37da21849313be215d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd8d80b1d546cf462d0eb7b44cebca11ba62817ce567ff65e988d9858fb34e30",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2025-04-18T10:07:56Z",
    "title_canon_sha256": "97929eddc511620718abaa32ebc2df64b28d45255512e287dcaa00c6fd9b53a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.13601",
    "kind": "arxiv",
    "version": 1
  }
}