Pith Number

pith:OK4J4ZDX

pith:2014:OK4J4ZDXE2RKZLMHAECDNZRUHZ

not attested not anchored not stored refs pending

On new definitions of SI base units. Why is the "atomic" kilogram preferable

K. A. Bronnikov, M. I. Kalinin, S. A. Kononogov, V. D. Ivashchuk, V. N. Melnikov, V. V. Khruschov

arxiv:1410.7906 v1 · 2014-10-29 · physics.ins-det · physics.atom-ph · physics.class-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{OK4J4ZDXE2RKZLMHAECDNZRUHZ}

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	2026-05-18T02:39:07.906856Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72b89e647726a2acad87010436e6343e66b778db2791534b3ad1d341219ea577

Aliases

arxiv: 1410.7906 · arxiv_version: 1410.7906v1 · doi: 10.48550/arxiv.1410.7906 · pith_short_12: OK4J4ZDXE2RK · pith_short_16: OK4J4ZDXE2RKZLMH · pith_short_8: OK4J4ZDX

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/OK4J4ZDXE2RKZLMHAECDNZRUHZ \
  | 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: 72b89e647726a2acad87010436e6343e66b778db2791534b3ad1d341219ea577

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24597c3f208ad8a2f9fda31ed68a2f67af3148d3abc749ad1255240d1e382416",
    "cross_cats_sorted": [
      "physics.atom-ph",
      "physics.class-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2014-10-29T09:13:14Z",
    "title_canon_sha256": "86ed3f0f6faf5894b2350d17107654af4a21bcc7ac36ee5bc64da7d685c06301"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1410.7906",
    "kind": "arxiv",
    "version": 1
  }
}