Pith Number

pith:SNZNKRCQ

pith:2015:SNZNKRCQ2AK7XUEKJMPCYMEPXB

not attested not anchored not stored refs pending

A macro placer algorithm for chip design

Attila De\'ak, Endre Cs\'oka

arxiv:1509.01867 v1 · 2015-09-06 · 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{SNZNKRCQ2AK7XUEKJMPCYMEPXB}

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	2026-05-18T01:33:50.330536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9372d54450d015fbd08a4b1e2c308fb84631e59933cf28dd9f18f4618529ae9f

Aliases

arxiv: 1509.01867 · arxiv_version: 1509.01867v1 · doi: 10.48550/arxiv.1509.01867 · pith_short_12: SNZNKRCQ2AK7 · pith_short_16: SNZNKRCQ2AK7XUEK · pith_short_8: SNZNKRCQ

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/SNZNKRCQ2AK7XUEKJMPCYMEPXB \
  | 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: 9372d54450d015fbd08a4b1e2c308fb84631e59933cf28dd9f18f4618529ae9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "590604fcf58f141eba289dea1ab2742e07b15638672d9ecb3073ef8997da7ed3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-09-06T23:33:23Z",
    "title_canon_sha256": "6d42eb117c3e821a8d9a2dfbe4071238d6effdf29d302a5b18ce82fbbab207fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.01867",
    "kind": "arxiv",
    "version": 1
  }
}