Pith Number

pith:64EPU3JN

pith:2025:64EPU3JN4JYWKHRFVYINH4RJUB

not attested not anchored not stored refs pending

An efficient construction of Raz's two-source randomness extractor with improved parameters

Cameron Foreman, Florian J. Curchod, Kevin Milner, Lewis Wooltorton

arxiv:2506.15547 v1 · 2025-06-18 · cs.CR · cs.CC · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{64EPU3JN4JYWKHRFVYINH4RJUB}

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	2026-07-05T11:23:45.905036Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f708fa6d2de271651e25ae10d3f229a061a8c5bb8ec33230e648f4f8b5ea2f8a

Aliases

arxiv: 2506.15547 · arxiv_version: 2506.15547v1 · doi: 10.48550/arxiv.2506.15547 · pith_short_12: 64EPU3JN4JYW · pith_short_16: 64EPU3JN4JYWKHRF · pith_short_8: 64EPU3JN

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/64EPU3JN4JYWKHRFVYINH4RJUB \
  | 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: f708fa6d2de271651e25ae10d3f229a061a8c5bb8ec33230e648f4f8b5ea2f8a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7dd773cae5ad4864aca6b4805deb40960b02b91c035b06c5f92e7a84be731424",
    "cross_cats_sorted": [
      "cs.CC",
      "quant-ph"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2025-06-18T15:18:57Z",
    "title_canon_sha256": "388d325a204ffbabd888629007c66ccd73e66c759464076ef0d57a47ebf17349"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.15547",
    "kind": "arxiv",
    "version": 1
  }
}