Pith Number

pith:25FZAI7R

pith:2008:25FZAI7RPREHATPHDED6MQOKZR

not attested not anchored not stored refs pending

Look-Ahead Benchmark Bias in Portfolio Performance Evaluation

Didier Sornette, Gilles Daniel, Peter Wohrmann

arxiv:0810.1922 v1 · 2008-10-10 · q-fin.PM · physics.soc-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{25FZAI7RPREHATPHDED6MQOKZR}

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	2026-05-18T02:44:32.835705Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d74b9023f17c48704de71907e641cacc440bc9952541a3045e106692afb38bde

Aliases

arxiv: 0810.1922 · arxiv_version: 0810.1922v1 · doi: 10.48550/arxiv.0810.1922 · pith_short_12: 25FZAI7RPREH · pith_short_16: 25FZAI7RPREHATPH · pith_short_8: 25FZAI7R

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/25FZAI7RPREHATPHDED6MQOKZR \
  | 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: d74b9023f17c48704de71907e641cacc440bc9952541a3045e106692afb38bde

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "538accc8a5d3c5d15beaaad451e9246edd165e661ff74b3e86e79c85568c4e81",
    "cross_cats_sorted": [
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-fin.PM",
    "submitted_at": "2008-10-10T17:05:46Z",
    "title_canon_sha256": "37c3185ff3d110387e0598b558002c9da312285c1886a8f5e200b42b35624800"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0810.1922",
    "kind": "arxiv",
    "version": 1
  }
}