Pith Number

pith:MRSFFHRB

pith:2015:MRSFFHRBVSYZZMSF7DIVRPQTVF

not attested not anchored not stored refs pending

Learning Reductions that Really Work

Alina Beygelzimer, Hal Daum\'e III, John Langford, Paul Mineiro

arxiv:1502.02704 v1 · 2015-02-09 · 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{MRSFFHRBVSYZZMSF7DIVRPQTVF}

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	2026-05-18T02:27:31.197558Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6464529e21acb19cb245f8d158be13a94ccd62a83558af59cf576816ec8ad623

Aliases

arxiv: 1502.02704 · arxiv_version: 1502.02704v1 · doi: 10.48550/arxiv.1502.02704 · pith_short_12: MRSFFHRBVSYZ · pith_short_16: MRSFFHRBVSYZZMSF · pith_short_8: MRSFFHRB

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/MRSFFHRBVSYZZMSF7DIVRPQTVF \
  | 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: 6464529e21acb19cb245f8d158be13a94ccd62a83558af59cf576816ec8ad623

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f89bbfaa5cfd0dfb00b4a51c78909e94ab94f0b522607e7a8325585d3c2cb6b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2015-02-09T22:05:25Z",
    "title_canon_sha256": "3c19495160a9bb8bca0ad8245e516c8dded73f85478a28ee1b1b5f184890cc60"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.02704",
    "kind": "arxiv",
    "version": 1
  }
}