Pith Number

pith:XYQZT52X

pith:2016:XYQZT52XHMMBHONQCYHBYP3NQ5

not attested not anchored not stored refs pending

Reforming the international system of units: On our way to redefine the base units solely from fundamental constants and beyond

Christian J. Bord\'e

arxiv:1602.01752 v1 · 2016-01-29 · physics.gen-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{XYQZT52XHMMBHONQCYHBYP3NQ5}

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	2026-05-18T01:21:18.188845Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be2199f7573b1813b9b0160e1c3f6d8770720471a4049af7887abfcfa961674f

Aliases

arxiv: 1602.01752 · arxiv_version: 1602.01752v1 · doi: 10.48550/arxiv.1602.01752 · pith_short_12: XYQZT52XHMMB · pith_short_16: XYQZT52XHMMBHONQ · pith_short_8: XYQZT52X

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/XYQZT52XHMMBHONQCYHBYP3NQ5 \
  | 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: be2199f7573b1813b9b0160e1c3f6d8770720471a4049af7887abfcfa961674f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "767f7c7e2c46b9c4ecf3915f7dfbf9631b27ac646e19c82ea5e5b6089f2eda04",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2016-01-29T17:50:35Z",
    "title_canon_sha256": "c9031254b0babb80f228ed664c8fb0bd150e49b4bf7de2b401b2166381ca4fe5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.01752",
    "kind": "arxiv",
    "version": 1
  }
}