Pith Number

pith:YYOOTFH3

pith:2018:YYOOTFH3T7XCLOVQC72QPFJ7HP

not attested not anchored not stored refs pending

A Simple and Efficient Strategy for the Coin Weighing Problem with a Spring Scale

Alex Sprintson, Anoosheh Heidarzadeh, Esmaeil Karimi, Fatemeh Kazemi

arxiv:1805.02977 v1 · 2018-05-08 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YYOOTFH3T7XCLOVQC72QPFJ7HP}

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	2026-05-18T00:16:35.047485Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c61ce994fb9fee25bab017f507953f3bfd7d730ee5e18f9024410aa08581042f

Aliases

arxiv: 1805.02977 · arxiv_version: 1805.02977v1 · doi: 10.48550/arxiv.1805.02977 · pith_short_12: YYOOTFH3T7XC · pith_short_16: YYOOTFH3T7XCLOVQ · pith_short_8: YYOOTFH3

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/YYOOTFH3T7XCLOVQC72QPFJ7HP \
  | 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: c61ce994fb9fee25bab017f507953f3bfd7d730ee5e18f9024410aa08581042f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "268695ad63c27e6ff33e1d786300d9f9a29272a2d3bfc474d2d0dca817fffd5c",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-05-08T12:35:49Z",
    "title_canon_sha256": "e0cd98cfbd08cb27c2fa3b9f468774d57f80bdaada98583a2c22cf59015f4d07"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.02977",
    "kind": "arxiv",
    "version": 1
  }
}