Pith Number

pith:B737WMFV

pith:2009:B737WMFV4QJJOJBAPNYCT4PD5J

not attested not anchored not stored refs pending

New procedures for testing whether stock price processes are martingales

Akimichi Takemura, Kei Takeuchi, Masayuki Kumon

arxiv:0907.3273 v2 · 2009-07-19 · q-fin.ST

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{B737WMFV4QJJOJBAPNYCT4PD5J}

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	2026-05-18T04:28:45.843090Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ff7fb30b5e4129724207b7029f1e3ea4dcc2e0e5ada2f206ddcd17c0442935e

Aliases

arxiv: 0907.3273 · arxiv_version: 0907.3273v2 · doi: 10.48550/arxiv.0907.3273 · pith_short_12: B737WMFV4QJJ · pith_short_16: B737WMFV4QJJOJBA · pith_short_8: B737WMFV

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/B737WMFV4QJJOJBAPNYCT4PD5J \
  | 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: 0ff7fb30b5e4129724207b7029f1e3ea4dcc2e0e5ada2f206ddcd17c0442935e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9a0661316cef4033293b1ef5de6fd59d82526ec4c854a0ef74f58f1da2947ee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-fin.ST",
    "submitted_at": "2009-07-19T08:48:03Z",
    "title_canon_sha256": "eb0d817db8e18f23db18e582f6ff982d179de86ea4862e0a558d65864f6dd8d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.3273",
    "kind": "arxiv",
    "version": 2
  }
}