Pith Number

pith:F34NUOWM

pith:2015:F34NUOWMHS4GCGQLEXLTRU5UJX

not attested not anchored not stored refs pending

Grout: A 1-Dimensional Substitution Tiling Space Program

Dan Rust, Scott Balchin

arxiv:1512.00398 v1 · 2015-12-01 · math.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{F34NUOWMHS4GCGQLEXLTRU5UJX}

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	2026-05-18T01:25:32.032956Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ef8da3acc3cb8611a0b25d738d3b44de5839948dd63502ff0a25e0dc7e72a43

Aliases

arxiv: 1512.00398 · arxiv_version: 1512.00398v1 · doi: 10.48550/arxiv.1512.00398 · pith_short_12: F34NUOWMHS4G · pith_short_16: F34NUOWMHS4GCGQL · pith_short_8: F34NUOWM

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/F34NUOWMHS4GCGQLEXLTRU5UJX \
  | 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: 2ef8da3acc3cb8611a0b25d738d3b44de5839948dd63502ff0a25e0dc7e72a43

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e152ec3281f6b678652a2bc830b3474bc246cac34b354b747925dbda20fc47a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2015-12-01T19:29:57Z",
    "title_canon_sha256": "26da320447bfa89aeab2dbea71d3c0ac8d91892d6fee6c08d66cc0913e902007"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.00398",
    "kind": "arxiv",
    "version": 1
  }
}