Pith Number

pith:NY4URJLB

pith:2015:NY4URJLBEVGGJOFMD4K2LP5A2Z

not attested not anchored not stored refs pending

Tiling solutions for optimal biological sensing

Aleksandra M. Walczak

arxiv:1507.01963 v1 · 2015-07-07 · q-bio.QM · q-bio.CB · q-bio.MN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NY4URJLBEVGGJOFMD4K2LP5A2Z}

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	2026-05-18T01:37:10.613782Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e3948a561254c64b8ac1f15a5bfa0d66002ace11a932119e2eb5004aa01544b

Aliases

arxiv: 1507.01963 · arxiv_version: 1507.01963v1 · doi: 10.48550/arxiv.1507.01963 · pith_short_12: NY4URJLBEVGG · pith_short_16: NY4URJLBEVGGJOFM · pith_short_8: NY4URJLB

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/NY4URJLBEVGGJOFMD4K2LP5A2Z \
  | 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: 6e3948a561254c64b8ac1f15a5bfa0d66002ace11a932119e2eb5004aa01544b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad968215c14f9dcd92e718f2736966eef749a44eded51efd37a1a63f41f27421",
    "cross_cats_sorted": [
      "q-bio.CB",
      "q-bio.MN"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.QM",
    "submitted_at": "2015-07-07T20:36:21Z",
    "title_canon_sha256": "87b8325cadaecc7ee1300952e601fd84619c943a172b9930507ee3aad4e07d4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.01963",
    "kind": "arxiv",
    "version": 1
  }
}