Pith Number

pith:Y3PKM6QO

pith:2017:Y3PKM6QOFH34D4Q2HNHSLYCYYV

not attested not anchored not stored refs pending

User Activity Detection via Group Testing and Coded Computation

Igor Bjelakovi\'c, Matthias Frey, S{\l}awomir Sta\'nczak

arxiv:1701.06354 v1 · 2017-01-23 · 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{Y3PKM6QOFH34D4Q2HNHSLYCYYV}

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	2026-05-18T00:52:18.643983Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6dea67a0e29f7c1f21a3b4f25e058c57e4dae135547b13d905627114b2afd20

Aliases

arxiv: 1701.06354 · arxiv_version: 1701.06354v1 · doi: 10.48550/arxiv.1701.06354 · pith_short_12: Y3PKM6QOFH34 · pith_short_16: Y3PKM6QOFH34D4Q2 · pith_short_8: Y3PKM6QO

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/Y3PKM6QOFH34D4Q2HNHSLYCYYV \
  | 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: c6dea67a0e29f7c1f21a3b4f25e058c57e4dae135547b13d905627114b2afd20

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7d32caefe5e86929ed125b551021426df398d73e5f49f60d8eaabe3dc370878",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2017-01-23T12:14:52Z",
    "title_canon_sha256": "c3531f05d1f72761a1366f9e4e64b14867287f9e92b5101d09c7689237751605"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.06354",
    "kind": "arxiv",
    "version": 1
  }
}