Pith Number

pith:NL6EFINF

pith:2021:NL6EFINFYN7YPDIEXFYUMH3BUC

not attested not anchored not stored refs pending

Albert A. Michelsons experimentum crucis 1881 in Potsdam, Germany

Hans J. Haubold

arxiv:2111.12176 v1 · 2021-11-23 · physics.hist-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{NL6EFINFYN7YPDIEXFYUMH3BUC}

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	2026-07-05T03:34:49.070677Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6afc42a1a5c37f878d04b971461f61a0b793cee1d17ebcddf2ebdc9e5fcb7ccf

Aliases

arxiv: 2111.12176 · arxiv_version: 2111.12176v1 · doi: 10.48550/arxiv.2111.12176 · pith_short_12: NL6EFINFYN7Y · pith_short_16: NL6EFINFYN7YPDIE · pith_short_8: NL6EFINF

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/NL6EFINFYN7YPDIEXFYUMH3BUC \
  | 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: 6afc42a1a5c37f878d04b971461f61a0b793cee1d17ebcddf2ebdc9e5fcb7ccf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ccc722217f1ca03752f3dc1519adc276892aa3061167595ab1826e87c4f2e23",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2021-11-23T22:27:17Z",
    "title_canon_sha256": "ba6b624f450ad3b4a432b7dac3bc19d8cea9e8f8c3812b52d54bc2c02b2bd80e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.12176",
    "kind": "arxiv",
    "version": 1
  }
}