Pith Number

pith:FBCOITNS

pith:2026:FBCOITNSAH2RYPQTBQ2ZWHELYF

not attested not anchored not stored refs pending

Decision-focused Sparse Tangent Portfolio Optimization

Haeun Jeon, Hyunglip Bae, Seunghoon Choi, Woo Chang Kim, Yongjae Lee

arxiv:2607.00581 v1 · 2026-07-01 · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FBCOITNSAH2RYPQTBQ2ZWHELYF}

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	2026-07-02T01:17:48.171384Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2844e44db201f51c3e130c359b1c8bc14e48126fd6e8fc69972e68bcec5104a5

Aliases

arxiv: 2607.00581 · arxiv_version: 2607.00581v1 · doi: 10.48550/arxiv.2607.00581 · pith_short_12: FBCOITNSAH2R · pith_short_16: FBCOITNSAH2RYPQT · pith_short_8: FBCOITNS

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/FBCOITNSAH2RYPQTBQ2ZWHELYF \
  | 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: 2844e44db201f51c3e130c359b1c8bc14e48126fd6e8fc69972e68bcec5104a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e9ff47f4355b1c43eb6ffceb7c9c021e66d287cc00813703f430783f767c1dd",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-07-01T08:06:07Z",
    "title_canon_sha256": "340324904df884632fc17963eea6fddc6fc6a6979523983f878fb96032915c8e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.00581",
    "kind": "arxiv",
    "version": 1
  }
}