Pith Number

pith:DUTVHATX

pith:2012:DUTVHATXAM7HRP7UVTOEU5ZHLT

not attested not anchored not stored refs pending

Optimal portfolio for a robust financial system

Hirokazu Matsushima, Kenji Nishiguchi, Satoshi Morinaga, Yoshiharu Maeno

arxiv:1211.5235 v2 · 2012-11-22 · q-fin.RM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DUTVHATXAM7HRP7UVTOEU5ZHLT}

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	2026-05-18T00:58:42.781028Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d27538277033e78bff4acdc4a77275ccd269be4e8f42f6505351c20362a98a9

Aliases

arxiv: 1211.5235 · arxiv_version: 1211.5235v2 · doi: 10.48550/arxiv.1211.5235 · pith_short_12: DUTVHATXAM7H · pith_short_16: DUTVHATXAM7HRP7U · pith_short_8: DUTVHATX

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/DUTVHATXAM7HRP7UVTOEU5ZHLT \
  | 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: 1d27538277033e78bff4acdc4a77275ccd269be4e8f42f6505351c20362a98a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d94602f17ccf256998baa971449a7183c25ad1297d37788121e3848f23c0b002",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-fin.RM",
    "submitted_at": "2012-11-22T09:09:04Z",
    "title_canon_sha256": "f0a5d67b6f0a28a1305a7b31270d3fd66cda2198c2f28fc8406aeec6be2bb720"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.5235",
    "kind": "arxiv",
    "version": 2
  }
}