Pith Number

pith:FFJNASPE

pith:2017:FFJNASPEAWO2P5FKCBVP3FPFNP

not attested not anchored not stored refs pending

A Software-Based Lock-In Measurement for Student Laboratories

David T. Chuss

arxiv:1711.00997 v1 · 2017-11-03 · 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{FFJNASPEAWO2P5FKCBVP3FPFNP}

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	2026-05-18T00:23:29.752865Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2952d049e4059da7f4aa106afd95e56bfc850b3d9135619a7841a0640f0c83a5

Aliases

arxiv: 1711.00997 · arxiv_version: 1711.00997v1 · doi: 10.48550/arxiv.1711.00997 · pith_short_12: FFJNASPEAWO2 · pith_short_16: FFJNASPEAWO2P5FK · pith_short_8: FFJNASPE

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/FFJNASPEAWO2P5FKCBVP3FPFNP \
  | 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: 2952d049e4059da7f4aa106afd95e56bfc850b3d9135619a7841a0640f0c83a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6fdbfd1e0dc696a75eb1bb31e71b88dfa1ce3b1a1db1c81eb53465518b0773be",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2017-11-03T02:17:18Z",
    "title_canon_sha256": "cd41a99da3fce27fc2f0c2f8dfe12b5c91ea3fe503b9955ace11c2fa52d7ac1b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.00997",
    "kind": "arxiv",
    "version": 1
  }
}