Pith Number

pith:IXFY2SI2

pith:2015:IXFY2SI27VUI555L4QK22VLGR4

not attested not anchored not stored refs pending

A Non-Oblivious Reduction of Counting Ones to Multiplication

Holger Petersen

arxiv:1506.03473 v1 · 2015-06-10 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IXFY2SI27VUI555L4QK22VLGR4}

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	2026-05-18T01:53:04.031245Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45cb8d491afd688ef7abe415ad55668f1b3ee4150f192e14db861a5b23681046

Aliases

arxiv: 1506.03473 · arxiv_version: 1506.03473v1 · doi: 10.48550/arxiv.1506.03473 · pith_short_12: IXFY2SI27VUI · pith_short_16: IXFY2SI27VUI555L · pith_short_8: IXFY2SI2

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/IXFY2SI27VUI555L4QK22VLGR4 \
  | 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: 45cb8d491afd688ef7abe415ad55668f1b3ee4150f192e14db861a5b23681046

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5806a7982ad41342276ace74e8def402023f7b060cea2a5859c459e34f468638",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-06-10T20:39:32Z",
    "title_canon_sha256": "133a6e14b6f74589ea314ab23ae0cd05eebd3f25ce610ce4e5029cf5ce04d8e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.03473",
    "kind": "arxiv",
    "version": 1
  }
}