Pith Number

pith:X5R2AJS6

pith:2018:X5R2AJS65KAO5WQLTXEM22RRQH

not attested not anchored not stored refs pending

The arc-topology

Akhil Mathew, Bhargav Bhatt

arxiv:1807.04725 v4 · 2018-07-12 · math.AG · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{X5R2AJS65KAO5WQLTXEM22RRQH}

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	2026-07-05T01:59:25.322665Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf63a0265eea80eeda0b9dc8cd6a3181fe8c2d50ee532918a419ea95ae191f3d

Aliases

arxiv: 1807.04725 · arxiv_version: 1807.04725v4 · doi: 10.48550/arxiv.1807.04725 · pith_short_12: X5R2AJS65KAO · pith_short_16: X5R2AJS65KAO5WQL · pith_short_8: X5R2AJS6

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/X5R2AJS65KAO5WQLTXEM22RRQH \
  | 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: bf63a0265eea80eeda0b9dc8cd6a3181fe8c2d50ee532918a419ea95ae191f3d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f75b2309cc543dbd69d7244052d39cdd1fbe7a0ece54bfabe6527a52d38e5f5",
    "cross_cats_sorted": [
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-07-12T17:01:06Z",
    "title_canon_sha256": "3bbb217cbdd9c9935599b562bb1819e3bd8ed0bc4ad7ec87528a78e335f54068"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.04725",
    "kind": "arxiv",
    "version": 4
  }
}