Pith Number

pith:HCM6FWZ3

pith:2015:HCM6FWZ3AKYQJMTI2ZFGAAXUDH

not attested not anchored not stored refs pending

Randomness amplification against no-signaling adversaries using two devices

Fernando G.S.L. Brand\~ao, Hanna Wojew\'odka, Karol Horodecki, Micha{\l} Horodecki, Pawe{\l} Horodecki, Ravishankar Ramanathan

arxiv:1504.06313 v2 · 2015-04-23 · 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{HCM6FWZ3AKYQJMTI2ZFGAAXUDH}

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	2026-05-18T00:55:47.167344Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3899e2db3b02b104b268d64a6002f419ea19196c44ec1bc3f016d2c541d2e8d8

Aliases

arxiv: 1504.06313 · arxiv_version: 1504.06313v2 · doi: 10.48550/arxiv.1504.06313 · pith_short_12: HCM6FWZ3AKYQ · pith_short_16: HCM6FWZ3AKYQJMTI · pith_short_8: HCM6FWZ3

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/HCM6FWZ3AKYQJMTI2ZFGAAXUDH \
  | 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: 3899e2db3b02b104b268d64a6002f419ea19196c44ec1bc3f016d2c541d2e8d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "99fb52f3371b284f4a4c5c808fdaaaeccfd4151d2c1783f3299634bf30b49c0a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-04-23T19:52:47Z",
    "title_canon_sha256": "413e47d2b6159eecd4d350e05144bb49c15ba486fd8e453ee44b7f49b84c0a12"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.06313",
    "kind": "arxiv",
    "version": 2
  }
}