Pith Number

pith:7I4CVRLY

pith:2013:7I4CVRLYZAJUOJCFZ7WEK2JB5Y

not attested not anchored not stored refs pending

Self-synchronizing pulse position modulation with error tolerance

Yuichiro Fujiwara

arxiv:1301.3369 v2 · 2013-01-15 · cs.IT · math.CO · 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{7I4CVRLYZAJUOJCFZ7WEK2JB5Y}

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	2026-05-18T03:15:43.494327Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa382ac578c813472445cfec456921ee3e018e883cff49fe16e1d5362d1d41ee

Aliases

arxiv: 1301.3369 · arxiv_version: 1301.3369v2 · doi: 10.48550/arxiv.1301.3369 · pith_short_12: 7I4CVRLYZAJU · pith_short_16: 7I4CVRLYZAJUOJCF · pith_short_8: 7I4CVRLY

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/7I4CVRLYZAJUOJCFZ7WEK2JB5Y \
  | 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: fa382ac578c813472445cfec456921ee3e018e883cff49fe16e1d5362d1d41ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88fa39d680d5a715e94ab601e615b12558ae6481f13a9f17e7c813a5701b01eb",
    "cross_cats_sorted": [
      "math.CO",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-01-15T14:51:12Z",
    "title_canon_sha256": "86b89ddfa6c829a13ffd73165ea108207f6a57bf26fd97bec1907d016e677ef9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.3369",
    "kind": "arxiv",
    "version": 2
  }
}