Pith Number

pith:EEPPK7KK

pith:2016:EEPPK7KKSKTPKVZCDHGLWQZSMT

not attested not anchored not stored refs pending

Finding a Hadamard Matrix by Simulated Annealing of Spin-Vectors

Andriyan Bayu Suksmono

arxiv:1606.03815 v3 · 2016-06-13 · physics.comp-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{EEPPK7KKSKTPKVZCDHGLWQZSMT}

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	2026-05-18T00:41:41.742446Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

211ef57d4a92a6f5572219ccbb433264f6d3cb69cc12f34c8393ea240035b850

Aliases

arxiv: 1606.03815 · arxiv_version: 1606.03815v3 · doi: 10.48550/arxiv.1606.03815 · pith_short_12: EEPPK7KKSKTP · pith_short_16: EEPPK7KKSKTPKVZC · pith_short_8: EEPPK7KK

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/EEPPK7KKSKTPKVZCDHGLWQZSMT \
  | 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: 211ef57d4a92a6f5572219ccbb433264f6d3cb69cc12f34c8393ea240035b850

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24c0645a1eecf1048fbfa70766866c8f1647481022762754861c67a076efaf54",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2016-06-13T05:24:39Z",
    "title_canon_sha256": "222487ec9b727ca79dc9388a55e6d3f0513bb0261b23a8aef017148e28f05912"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.03815",
    "kind": "arxiv",
    "version": 3
  }
}