Pith Number

pith:QBQC5U3M

pith:2012:QBQC5U3MOBV4L5LBJJ2MCKBIS5

not attested not anchored not stored refs pending

AutoAmp : An Open-Source Analog Amplifier Design Tool - For Classroom and Lab Purposes

K. Sanmukh Rao, Om Prasad Patri

arxiv:1209.4157 v1 · 2012-09-19 · cs.OH

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QBQC5U3MOBV4L5LBJJ2MCKBIS5}

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	2026-05-18T03:45:13.276181Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80602ed36c706bc5f5614a74c1282897551d77b8a786f007520f571f1bed25bf

Aliases

arxiv: 1209.4157 · arxiv_version: 1209.4157v1 · doi: 10.48550/arxiv.1209.4157 · pith_short_12: QBQC5U3MOBV4 · pith_short_16: QBQC5U3MOBV4L5LB · pith_short_8: QBQC5U3M

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/QBQC5U3MOBV4L5LBJJ2MCKBIS5 \
  | 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: 80602ed36c706bc5f5614a74c1282897551d77b8a786f007520f571f1bed25bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a67bf4d92e7536d73450c75ced72049a36abe3234b1801c2f5d628836c31915f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "cs.OH",
    "submitted_at": "2012-09-19T06:14:28Z",
    "title_canon_sha256": "cc5daba7ac7a3abcd89ea694315457cfd878e43371cd7cfb0dc6f0ee2bd74f27"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.4157",
    "kind": "arxiv",
    "version": 1
  }
}