Pith Number

pith:NWQOLCAK

pith:2018:NWQOLCAKC5MZXMFALZ4TETMYHS

not attested not anchored not stored refs pending

Model Structures for Correspondences and Bifibrations

Danny Stevenson

arxiv:1807.08226 v1 · 2018-07-22 · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NWQOLCAKC5MZXMFALZ4TETMYHS}

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	2026-05-18T00:10:08.841489Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6da0e5880a17599bb0a05e79324d983cba4ca52dca1cf23f853e6627513ae52a

Aliases

arxiv: 1807.08226 · arxiv_version: 1807.08226v1 · doi: 10.48550/arxiv.1807.08226 · pith_short_12: NWQOLCAKC5MZ · pith_short_16: NWQOLCAKC5MZXMFA · pith_short_8: NWQOLCAK

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/NWQOLCAKC5MZXMFALZ4TETMYHS \
  | 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: 6da0e5880a17599bb0a05e79324d983cba4ca52dca1cf23f853e6627513ae52a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9bd114e934f0387a93188a85af6376749e7b2305e23119d72f7518109d4bd216",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2018-07-22T02:15:15Z",
    "title_canon_sha256": "7f6b17b256577785df173732118ba6e035e24b61373d7ea81752d1a1987edf84"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.08226",
    "kind": "arxiv",
    "version": 1
  }
}