Pith Number

pith:DBP43JRK

pith:2026:DBP43JRKX5X3B23FHTKNHL3KHI

not attested not anchored not stored refs pending

Quantum Shannon theory made robust: a tale of three protocols for almost i.i.d. sources

Filippo Girardi, Giacomo De Palma, Ludovico Lami, Nilanjana Datta

arxiv:2605.18726 v1 · 2026-05-18 · quant-ph · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DBP43JRKX5X3B23FHTKNHL3KHI}

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	2026-05-20T00:06:17.381269Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

185fcda62abf6fb0eb653cd4d3af6a3a12ec022b9f9065ece0f2f4a340c6a24b

Aliases

arxiv: 2605.18726 · arxiv_version: 2605.18726v1 · doi: 10.48550/arxiv.2605.18726 · pith_short_12: DBP43JRKX5X3 · pith_short_16: DBP43JRKX5X3B23F · pith_short_8: DBP43JRK

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/DBP43JRKX5X3B23FHTKNHL3KHI \
  | 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: 185fcda62abf6fb0eb653cd4d3af6a3a12ec022b9f9065ece0f2f4a340c6a24b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15b26ee48a960063fadf6089bedee4d5f832b0d00a962a222f77b9bd1e99143d",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-05-18T17:51:27Z",
    "title_canon_sha256": "145ba45e4cbafa3e81778943e10bab3d9bb4c2b75da8cb2039ba084f45b0308b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.18726",
    "kind": "arxiv",
    "version": 1
  }
}