Pith Number

pith:5H5HPMXK

pith:2014:5H5HPMXKJR52EDT6BDBW7RGDWB

not attested not anchored not stored refs pending

Blanchfield forms and Gordian distance

Maciej Borodzik, Mark Powell, Stefan Friedl

arxiv:1409.8421 v2 · 2014-09-30 · 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{5H5HPMXKJR52EDT6BDBW7RGDWB}

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	2026-05-18T02:41:03.158216Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9fa77b2ea4c7ba20e7e08c36fc4c3b071508d55e3cc51b5ca0e2a775a2797ac

Aliases

arxiv: 1409.8421 · arxiv_version: 1409.8421v2 · doi: 10.48550/arxiv.1409.8421 · pith_short_12: 5H5HPMXKJR52 · pith_short_16: 5H5HPMXKJR52EDT6 · pith_short_8: 5H5HPMXK

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/5H5HPMXKJR52EDT6BDBW7RGDWB \
  | 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: e9fa77b2ea4c7ba20e7e08c36fc4c3b071508d55e3cc51b5ca0e2a775a2797ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3ce1ab1ce921d713a542e9aaa19962608dfc99e9ea2e8399bd3a303507d4334d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2014-09-30T08:15:22Z",
    "title_canon_sha256": "87d5d7a98f413077593bba16645225769dd00da574a49359818a280bae7bce2b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.8421",
    "kind": "arxiv",
    "version": 2
  }
}