Pith Number

pith:62YBRTXQ

pith:2015:62YBRTXQSXY3OXMYZ7YOK6U5A7

not attested not anchored not stored refs pending

Planck's constant measurement by Landauer quantization for students laboratories

Desislav S. Damyanov, Iliana N. Pavlova, Simona I. Ilieva, Todor M. Mishonov, Vasil G. Yordanov, Vassil N. Gourev

arxiv:1501.05850 v3 · 2015-01-23 · physics.ed-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{62YBRTXQSXY3OXMYZ7YOK6U5A7}

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	2026-05-18T00:11:51.186022Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6b018cef095f1b75d98cff0e57a9d07cfee7837bc7a4e2c9bbfe15477e12506

Aliases

arxiv: 1501.05850 · arxiv_version: 1501.05850v3 · doi: 10.48550/arxiv.1501.05850 · pith_short_12: 62YBRTXQSXY3 · pith_short_16: 62YBRTXQSXY3OXMY · pith_short_8: 62YBRTXQ

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/62YBRTXQSXY3OXMYZ7YOK6U5A7 \
  | 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: f6b018cef095f1b75d98cff0e57a9d07cfee7837bc7a4e2c9bbfe15477e12506

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61804f9968a4acd58896c45b9eecc4e7467dbc45329a0094284f260047f6df50",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2015-01-23T16:02:56Z",
    "title_canon_sha256": "1efc1b0245b8778a8f614639f81863aa2ec6d113551f890775ff78577be50de2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.05850",
    "kind": "arxiv",
    "version": 3
  }
}