Pith Number

pith:UZD2TFTW

pith:2015:UZD2TFTW5TLFK75PPMY7KNMAC2

not attested not anchored not stored refs pending

How large should the QM region be in QM/MM calculations? The case of catechol O-methyltransferase

Heather J. Kulik, Jianyu Zhang, Judith P. Klinman, Todd J. Martinez

arxiv:1505.05730 v2 · 2015-05-21 · q-bio.BM · cond-mat.soft · physics.chem-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UZD2TFTW5TLFK75PPMY7KNMAC2}

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	2026-05-18T01:02:56.977365Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a647a99676ecd6557faf7b31f53580169997e3807a87f20d8285fb9485f10ef8

Aliases

arxiv: 1505.05730 · arxiv_version: 1505.05730v2 · doi: 10.48550/arxiv.1505.05730 · pith_short_12: UZD2TFTW5TLF · pith_short_16: UZD2TFTW5TLFK75P · pith_short_8: UZD2TFTW

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/UZD2TFTW5TLFK75PPMY7KNMAC2 \
  | 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: a647a99676ecd6557faf7b31f53580169997e3807a87f20d8285fb9485f10ef8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "300c1dbdd2b3a213ffce6706480255f0933c2fb3c42957c8601a28bf290fcd11",
    "cross_cats_sorted": [
      "cond-mat.soft",
      "physics.chem-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.BM",
    "submitted_at": "2015-05-21T13:32:19Z",
    "title_canon_sha256": "6289655499f542e7d374511b11c00136894cafde2bebed945d5cfc41dad66c41"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.05730",
    "kind": "arxiv",
    "version": 2
  }
}