Pith Number

pith:CRWNPICU

pith:2018:CRWNPICU2ANIVFICH3RSL7FXJZ

not attested not anchored not stored refs pending

On a generalisation of spikes

Deborah Chun, Geoff Whittle, Kevin Grace, Nick Brettell, Rutger Campbell

arxiv:1804.06959 v1 · 2018-04-19 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CRWNPICU2ANIVFICH3RSL7FXJZ}

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	2026-07-05T01:06:46.101023Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

146cd7a054d01a8a95023ee325fcb74e59fd44e333b1e725563070df2edab0cf

Aliases

arxiv: 1804.06959 · arxiv_version: 1804.06959v1 · doi: 10.48550/arxiv.1804.06959 · pith_short_12: CRWNPICU2ANI · pith_short_16: CRWNPICU2ANIVFIC · pith_short_8: CRWNPICU

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/CRWNPICU2ANIVFICH3RSL7FXJZ \
  | 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: 146cd7a054d01a8a95023ee325fcb74e59fd44e333b1e725563070df2edab0cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78bcebbbd6ebc5923116de3d44879df6076ad36f746630aa19f450266758b247",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-04-19T01:03:51Z",
    "title_canon_sha256": "d67db71336b13ffd006ceb58c570fe39aa79c697fab78664f21d9470c9ae4dda"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.06959",
    "kind": "arxiv",
    "version": 1
  }
}