Pith Number

pith:BLYOIQ7K

pith:2019:BLYOIQ7KVQJ2X5XATOJDSKTUYY

not attested not anchored not stored refs pending

Gaps between consecutive untwisting numbers

Duncan McCoy

arxiv:1908.06447 v1 · 2019-08-18 · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BLYOIQ7KVQJ2X5XATOJDSKTUYY}

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	2026-07-05T01:59:49.970143Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0af0e443eaac13abf6e09b92392a74c626a7f84bd83a2748ad35343ffb8da998

Aliases

arxiv: 1908.06447 · arxiv_version: 1908.06447v1 · doi: 10.48550/arxiv.1908.06447 · pith_short_12: BLYOIQ7KVQJ2 · pith_short_16: BLYOIQ7KVQJ2X5XA · pith_short_8: BLYOIQ7K

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/BLYOIQ7KVQJ2X5XATOJDSKTUYY \
  | 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: 0af0e443eaac13abf6e09b92392a74c626a7f84bd83a2748ad35343ffb8da998

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b56ea9ad7e849cc6af3e3a9bb0f6f0c9423fb4c55f5429332f604ed4ee8d1fe4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2019-08-18T14:30:44Z",
    "title_canon_sha256": "8eadebad7bdca47402fdfa3362cab29900bc8846b91b17f440ed6caf660f7b06"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.06447",
    "kind": "arxiv",
    "version": 1
  }
}