Pith Number

pith:VWI4PVGC

pith:2025:VWI4PVGCRWSY4T2EXESVXQDZMT

not attested not anchored not stored refs pending

Backsolution: A Framework for Solving Inverse Problems via Automatic Differentiation

Koji Kobayashi, Tomi Ohtsuki

arxiv:2506.13210 v1 · 2025-06-16 · cond-mat.dis-nn · cond-mat.mes-hall

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VWI4PVGCRWSY4T2EXESVXQDZMT}

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	2026-07-05T11:22:06.874569Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad91c7d4c28da58e4f44b9255bc07964ca115fcc48fc6d38f77d620988c6559a

Aliases

arxiv: 2506.13210 · arxiv_version: 2506.13210v1 · doi: 10.48550/arxiv.2506.13210 · pith_short_12: VWI4PVGCRWSY · pith_short_16: VWI4PVGCRWSY4T2E · pith_short_8: VWI4PVGC

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/VWI4PVGCRWSY4T2EXESVXQDZMT \
  | 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: ad91c7d4c28da58e4f44b9255bc07964ca115fcc48fc6d38f77d620988c6559a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "962c716560ab0c2b2c5794da56a60bef43e7e9919767477d35b93231a61be024",
    "cross_cats_sorted": [
      "cond-mat.mes-hall"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.dis-nn",
    "submitted_at": "2025-06-16T08:13:20Z",
    "title_canon_sha256": "b42f74ab655ad750ca703676ce72c23fe6b11307d1c393d4a38b3f9f2ff9470a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.13210",
    "kind": "arxiv",
    "version": 1
  }
}