Pith Number

pith:5XCU7BHQ

pith:2010:5XCU7BHQMK2PZKDXDVNKUTQWPJ

not attested not anchored not stored refs pending

It takes half the energy of a photon to send one bit reliably on the Poisson channel with feedback

Amos Lapidoth, Ligong Wang, Shahab Asoodeh

arxiv:1010.5382 v1 · 2010-10-26 · 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{5XCU7BHQMK2PZKDXDVNKUTQWPJ}

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	2026-05-18T04:38:38.903672Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

edc54f84f062b4fca8771d5aaa4e167a684ec100a1ecfc187ff62938246b431f

Aliases

arxiv: 1010.5382 · arxiv_version: 1010.5382v1 · doi: 10.48550/arxiv.1010.5382 · pith_short_12: 5XCU7BHQMK2P · pith_short_16: 5XCU7BHQMK2PZKDX · pith_short_8: 5XCU7BHQ

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/5XCU7BHQMK2PZKDXDVNKUTQWPJ \
  | 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: edc54f84f062b4fca8771d5aaa4e167a684ec100a1ecfc187ff62938246b431f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "11d56a17b6fe71a5c47be26b9b55b4a6cc12364aa931b29804826375ad19044c",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2010-10-26T12:50:53Z",
    "title_canon_sha256": "9297d50371bafc566a646f88587dfabfa0f994f98044ba832f49104e564e1336"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.5382",
    "kind": "arxiv",
    "version": 1
  }
}