Pith Number

pith:QCH523WE

pith:2015:QCH523WEQU42O5UO7J7MO4R3H4

not attested not anchored not stored refs pending

Fourier Codes and Hartley Codes

C.M.F. Barros, H.M. de Oliveira, R.M. Campello de Souza

arxiv:1502.02489 v1 · 2015-02-09 · 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{QCH523WEQU42O5UO7J7MO4R3H4}

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	2026-05-18T02:27:42.116784Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

808fdd6ec48539a7768efa7ec7723b3f1a2cb17d0dce6c310ea060953dad0350

Aliases

arxiv: 1502.02489 · arxiv_version: 1502.02489v1 · doi: 10.48550/arxiv.1502.02489 · pith_short_12: QCH523WEQU42 · pith_short_16: QCH523WEQU42O5UO · pith_short_8: QCH523WE

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/QCH523WEQU42O5UO7J7MO4R3H4 \
  | 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: 808fdd6ec48539a7768efa7ec7723b3f1a2cb17d0dce6c310ea060953dad0350

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8ff3417b99577c09a0870ebbc150311a4a8a701446605d2eb6f54b2c5544d38",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-02-09T14:01:20Z",
    "title_canon_sha256": "463392d732370e7e0ca2a784735ff811e8ef3c47f98647a7e32fa279c55dabc8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.02489",
    "kind": "arxiv",
    "version": 1
  }
}