Pith Number

pith:WM4FG5YL

pith:2025:WM4FG5YLJIZZUGULKGU4SZWHKH

not attested not anchored not stored refs pending

Learning with springs and sticks

Al\'an Aspuru-Guzik, Luis Mantilla Calder\'on

arxiv:2508.19015 v1 · 2025-08-26 · 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{WM4FG5YLJIZZUGULKGU4SZWHKH}

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	2026-07-05T11:59:35.293930Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b33853770b4a339a1a8b51a9c966c751f8debab9902573babba539ffc40a51ed

Aliases

arxiv: 2508.19015 · arxiv_version: 2508.19015v1 · doi: 10.48550/arxiv.2508.19015 · pith_short_12: WM4FG5YLJIZZ · pith_short_16: WM4FG5YLJIZZUGUL · pith_short_8: WM4FG5YL

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/WM4FG5YLJIZZUGULKGU4SZWHKH \
  | 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: b33853770b4a339a1a8b51a9c966c751f8debab9902573babba539ffc40a51ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45df04f42076f056cb9afdcc25f697980bce9d14de4dbe400e121ccbf9c41f80",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2025-08-26T13:26:26Z",
    "title_canon_sha256": "08f73c58aecb58b07e9c6a292c5be683a58ca4b71a21634290ee4c77db26daed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.19015",
    "kind": "arxiv",
    "version": 1
  }
}