Pith Number

pith:TJ42KXLG

pith:2019:TJ42KXLGDMI6HG4B7DCTVGKHZF

not attested not anchored not stored refs pending

Efficient Encoding of Data into Two-Dimensional Constrained Bit Patterns

Danny Dub\'e

arxiv:1904.07838 v1 · 2019-04-16 · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TJ42KXLGDMI6HG4B7DCTVGKHZF}

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	2026-05-17T23:48:24.099596Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a79a55d661b11e39b81f8c53a9947c95b9dc89dc97e28a609c612d2bd090a13

Aliases

arxiv: 1904.07838 · arxiv_version: 1904.07838v1 · doi: 10.48550/arxiv.1904.07838 · pith_short_12: TJ42KXLGDMI6 · pith_short_16: TJ42KXLGDMI6HG4B · pith_short_8: TJ42KXLG

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/TJ42KXLGDMI6HG4B7DCTVGKHZF \
  | 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: 9a79a55d661b11e39b81f8c53a9947c95b9dc89dc97e28a609c612d2bd090a13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e96c8904871c626bed275e5703ca0a528a3ff5add017cf72b35b092d1a0a979f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2019-04-16T17:37:55Z",
    "title_canon_sha256": "0a9e2aa42e5294e91f4d9b80de36c74e17b003c9c182a56dc06a1de6e8728cd1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.07838",
    "kind": "arxiv",
    "version": 1
  }
}