Pith Number

pith:5U4PTY5V

pith:2021:5U4PTY5V3VWA5TEE4TCTWESPOE

not attested not anchored not stored refs pending

Contention-based Grant-free Transmission with Extremely Sparse Orthogonal Pilot Scheme

Weimin Li, Yihua Ma, Zhifeng Yuan, Zhigang Li

arxiv:2106.04172 v1 · 2021-06-08 · cs.IT · eess.SP · 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{5U4PTY5V3VWA5TEE4TCTWESPOE}

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	2026-07-05T02:47:12.846980Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed38f9e3b5dd6c0ecc84e4c53b124f7118b67d3774da2a771635d25425f9ba07

Aliases

arxiv: 2106.04172 · arxiv_version: 2106.04172v1 · doi: 10.48550/arxiv.2106.04172 · pith_short_12: 5U4PTY5V3VWA · pith_short_16: 5U4PTY5V3VWA5TEE · pith_short_8: 5U4PTY5V

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/5U4PTY5V3VWA5TEE4TCTWESPOE \
  | 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: ed38f9e3b5dd6c0ecc84e4c53b124f7118b67d3774da2a771635d25425f9ba07

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2a278144ad0493a9b36cbd1422bc7083cc9ace7364d3ef6854d81a0e4271655",
    "cross_cats_sorted": [
      "eess.SP",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2021-06-08T08:23:28Z",
    "title_canon_sha256": "bcb7ea54d5b3fd573c6777eba99e0e920e6e851c5b784d1d8c5bc9640b7db12c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.04172",
    "kind": "arxiv",
    "version": 1
  }
}