Pith Number

pith:5HJF354C

pith:2012:5HJF354CUSJCVO24HFZCGOEXKM

not attested not anchored not stored refs pending

NMR chemical shift as analytical derivative of the Helmholtz free energy

Alessandro Soncini, Willem Van den Heuvel

arxiv:1211.5891 v1 · 2012-11-26 · 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{5HJF354CUSJCVO24HFZCGOEXKM}

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	2026-05-18T02:56:44.437549Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9d25df782a4922abb5c39722338975305822f952d4a03631c7c32e02dd961d9

Aliases

arxiv: 1211.5891 · arxiv_version: 1211.5891v1 · doi: 10.48550/arxiv.1211.5891 · pith_short_12: 5HJF354CUSJC · pith_short_16: 5HJF354CUSJCVO24 · pith_short_8: 5HJF354C

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/5HJF354CUSJCVO24HFZCGOEXKM \
  | 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: e9d25df782a4922abb5c39722338975305822f952d4a03631c7c32e02dd961d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0675e453c6a013206972c5fc7eec5c82bc7278bd1a63e7dc0eb298385a67c653",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2012-11-26T09:11:31Z",
    "title_canon_sha256": "061593d6eacfede3c338361ff3fc992726012fbaa78262bae9959e8c7933447e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.5891",
    "kind": "arxiv",
    "version": 1
  }
}