Pith Number

pith:U4V6XHNB

pith:2018:U4V6XHNBJWC7KOLZEFT5OA7TMC

not attested not anchored not stored refs pending

Chemical Structure Elucidation from Mass Spectrometry by Matching Substructures

Davin Choo, Hai Leong Chieu, Jing Lim, Joshua Wong, Lee Han Eric Tan, Minn Xuan Wong, Neng Kai Nigel Neo

arxiv:1811.07886 v1 · 2018-11-17 · physics.chem-ph · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U4V6XHNBJWC7KOLZEFT5OA7TMC}

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	2026-05-18T00:00:17.412755Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a72beb9da14d85f539792167d703f3609f5ed09df9fc6d185f7e863d53eaf57d

Aliases

arxiv: 1811.07886 · arxiv_version: 1811.07886v1 · doi: 10.48550/arxiv.1811.07886 · pith_short_12: U4V6XHNBJWC7 · pith_short_16: U4V6XHNBJWC7KOLZ · pith_short_8: U4V6XHNB

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/U4V6XHNBJWC7KOLZEFT5OA7TMC \
  | 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: a72beb9da14d85f539792167d703f3609f5ed09df9fc6d185f7e863d53eaf57d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c460862e846623ec32aa9ba98eeb77fab722024cd02ba0a22d417e59acc04ea",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2018-11-17T16:24:31Z",
    "title_canon_sha256": "fcaa8662733832c958b924158f5c928b81b015be7bccc0fc336fd5c6f07a669f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.07886",
    "kind": "arxiv",
    "version": 1
  }
}