Pith Number

pith:TVDT7ER5

pith:2025:TVDT7ER5J2LDBZGFE3GGWQYRWR

not attested not anchored not stored refs pending

Density Evolution Analysis of Sparse-Block IDMA

Gianluigi Liva, Jean-Francois Chamberland, Krishna Narayanan

arxiv:2507.13689 v1 · 2025-07-18 · 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{TVDT7ER5J2LDBZGFE3GGWQYRWR}

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	2026-07-05T11:39:21.281704Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d473f923d4e9630e4c526cc6b4311b46aebeef720ebdfc1c9d94fa4585e72cf

Aliases

arxiv: 2507.13689 · arxiv_version: 2507.13689v1 · doi: 10.48550/arxiv.2507.13689 · pith_short_12: TVDT7ER5J2LD · pith_short_16: TVDT7ER5J2LDBZGF · pith_short_8: TVDT7ER5

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/TVDT7ER5J2LDBZGFE3GGWQYRWR \
  | 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: 9d473f923d4e9630e4c526cc6b4311b46aebeef720ebdfc1c9d94fa4585e72cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f79e19b70a1a93204f6f428fa61054a7d668669cdb30229d9cb35952c23ef07",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2025-07-18T06:40:03Z",
    "title_canon_sha256": "715f81f15e09748e5b0b2f1ec5b8517bf36cbc987c84015bb2e1088da07d442c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.13689",
    "kind": "arxiv",
    "version": 1
  }
}