Pith Number

pith:2E3E2UHY

pith:2015:2E3E2UHYEE27NM6R7VHERHYUK5

not attested not anchored not stored refs pending

Almost Optimal Energy-Efficient Cognitive Communications in Unknown Environments

Chenhui Hu, Dapeng Wu, Pan Zhou, Tao Jiang

arxiv:1507.08438 v2 · 2015-07-30 · cs.NI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2E3E2UHYEE27NM6R7VHERHYUK5}

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	2026-05-18T01:36:03.246249Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1364d50f82135f6b3d1fd4e489f145764fdbed37e110a0aa6027ec96e8b0c2e

Aliases

arxiv: 1507.08438 · arxiv_version: 1507.08438v2 · doi: 10.48550/arxiv.1507.08438 · pith_short_12: 2E3E2UHYEE27 · pith_short_16: 2E3E2UHYEE27NM6R · pith_short_8: 2E3E2UHY

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/2E3E2UHYEE27NM6R7VHERHYUK5 \
  | 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: d1364d50f82135f6b3d1fd4e489f145764fdbed37e110a0aa6027ec96e8b0c2e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5901d53872b296050ec7b6584c33d5f162dc9d50c6aab0d3138c3c1b03f147b2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NI",
    "submitted_at": "2015-07-30T10:05:46Z",
    "title_canon_sha256": "20b958109fedb08de1070f9a0abc23a5b5bc3424b81c4821d678d7cb0d07e46b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.08438",
    "kind": "arxiv",
    "version": 2
  }
}