Pith Number

pith:BBBQRVKL

pith:2013:BBBQRVKLNJOQU4EWW4ELSIRGDU

not attested not anchored not stored refs pending

Simple curve singularities

Jan Stevens

arxiv:1306.4612 v1 · 2013-06-19 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BBBQRVKLNJOQU4EWW4ELSIRGDU}

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	2026-05-17T23:58:42.784020Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

084308d54b6a5d0a7096b708b922261d192455dc457dedfe04161353c06eb30b

Aliases

arxiv: 1306.4612 · arxiv_version: 1306.4612v1 · doi: 10.48550/arxiv.1306.4612 · pith_short_12: BBBQRVKLNJOQ · pith_short_16: BBBQRVKLNJOQU4EW · pith_short_8: BBBQRVKL

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/BBBQRVKLNJOQU4EWW4ELSIRGDU \
  | 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: 084308d54b6a5d0a7096b708b922261d192455dc457dedfe04161353c06eb30b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13c225a4e49d5aa11d5534c8140397be71947d5c0ad833e4ecd408d452b279d2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-06-19T16:51:22Z",
    "title_canon_sha256": "07887f9ebb7f9c00cb1fc248e73466eea86f98f38b66b77275878db926a210c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.4612",
    "kind": "arxiv",
    "version": 1
  }
}