Pith Number

pith:2ZSIU2YN

pith:2010:2ZSIU2YNTDSXHWFVHSMPMUD3RJ

not attested not anchored not stored refs pending

Completely Enhanced Cell Phone Keypad

Md. Abul Kalam Azad, Rezwana Sharmeen, Shabbir Ahmad, S. M. Kamruzzaman

arxiv:1009.4980 v1 · 2010-09-25 · cs.HC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2ZSIU2YNTDSXHWFVHSMPMUD3RJ}

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	2026-05-18T04:40:19.571567Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6648a6b0d98e573d8b53c98f6507b8a71d75acc06b0f12f5fbec2a6125d3460

Aliases

arxiv: 1009.4980 · arxiv_version: 1009.4980v1 · doi: 10.48550/arxiv.1009.4980 · pith_short_12: 2ZSIU2YNTDSX · pith_short_16: 2ZSIU2YNTDSXHWFV · pith_short_8: 2ZSIU2YN

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/2ZSIU2YNTDSXHWFVHSMPMUD3RJ \
  | 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: d6648a6b0d98e573d8b53c98f6507b8a71d75acc06b0f12f5fbec2a6125d3460

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e87544e404d5b6c687e2d3e75bd6d6542894d9c2d8ebfa75fab1ad65db8ab89b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.HC",
    "submitted_at": "2010-09-25T06:43:43Z",
    "title_canon_sha256": "7639f1020f4d05126c8c81686f3b0da1d56c23c2bdb999aee7fb32b085e1c28e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.4980",
    "kind": "arxiv",
    "version": 1
  }
}