Pith Number

pith:5W6VLVRS

pith:2018:5W6VLVRSGJGN3DTJBRRYHXFXG5

not attested not anchored not stored refs pending

Robust calibration and arbitrage-free interpolation of SSVI slices

Claude Martini, Ismail Laachir, Jacopo Corbetta, Pierre Cohort

arxiv:1804.04924 v2 · 2018-04-13 · q-fin.CP · q-fin.MF · q-fin.PR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5W6VLVRSGJGN3DTJBRRYHXFXG5}

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	2026-05-17T23:52:18.448872Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

edbd55d632324cdd8e690c6383dcb73751a9ff67ec22fe846cc07c915059a7ad

Aliases

arxiv: 1804.04924 · arxiv_version: 1804.04924v2 · doi: 10.48550/arxiv.1804.04924 · pith_short_12: 5W6VLVRSGJGN · pith_short_16: 5W6VLVRSGJGN3DTJ · pith_short_8: 5W6VLVRS

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/5W6VLVRSGJGN3DTJBRRYHXFXG5 \
  | 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: edbd55d632324cdd8e690c6383dcb73751a9ff67ec22fe846cc07c915059a7ad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a02e0a6083751dac71e52f69df49eb3acae6d53ff1df8d18e534f1966ef664fa",
    "cross_cats_sorted": [
      "q-fin.MF",
      "q-fin.PR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-fin.CP",
    "submitted_at": "2018-04-13T12:57:47Z",
    "title_canon_sha256": "675687e160a7be6cca2fc9b198a878dcadfa346c21b4018909692e39a6cbe987"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.04924",
    "kind": "arxiv",
    "version": 2
  }
}