Pith Number

pith:T4A4TVFW

pith:2021:T4A4TVFWH2X36ISSHR5MVSK6YP

not attested not anchored not stored refs pending

Scaffold Embeddings: Learning the Structure Spanned by Chemical Fragments, Scaffolds and Compounds

Arvind Ramanathan, Austin Clyde, Rick Stevens

arxiv:2103.06867 v1 · 2021-03-11 · 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{T4A4TVFWH2X36ISSHR5MVSK6YP}

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	2026-07-05T02:22:19.817862Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f01c9d4b63eafbf22523c7acac95ec3c3b7dac7bd91696ce4f9c54419a0b4b7

Aliases

arxiv: 2103.06867 · arxiv_version: 2103.06867v1 · doi: 10.48550/arxiv.2103.06867 · pith_short_12: T4A4TVFWH2X3 · pith_short_16: T4A4TVFWH2X36ISS · pith_short_8: T4A4TVFW

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/T4A4TVFWH2X36ISSHR5MVSK6YP \
  | 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: 9f01c9d4b63eafbf22523c7acac95ec3c3b7dac7bd91696ce4f9c54419a0b4b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "48110aa8d1d4cdbd3cca6bba76b37786563b7140fcd14f7cc78edc06446c7a96",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-03-11T18:54:12Z",
    "title_canon_sha256": "8ad3207b5926e991dcb731366609c5d878f36913b582b6347886cc9f02e65a8c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.06867",
    "kind": "arxiv",
    "version": 1
  }
}