Pith Number

pith:PW42UULY

pith:2015:PW42UULYVFYPNE7STFN5RZIUUV

not attested not anchored not stored refs pending

Cooperative Data Exchange with Unreliable Clients

Alex Sprintson, Anoosheh Heidarzadeh

arxiv:1508.03871 v2 · 2015-08-16 · 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{PW42UULYVFYPNE7STFN5RZIUUV}

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	2026-05-18T01:31:10.600965Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7db9aa5178a970f693f2995bd8e514a560b5618ef16ce795a4900f1651a52024

Aliases

arxiv: 1508.03871 · arxiv_version: 1508.03871v2 · doi: 10.48550/arxiv.1508.03871 · pith_short_12: PW42UULYVFYP · pith_short_16: PW42UULYVFYPNE7S · pith_short_8: PW42UULY

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/PW42UULYVFYPNE7STFN5RZIUUV \
  | 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: 7db9aa5178a970f693f2995bd8e514a560b5618ef16ce795a4900f1651a52024

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d31246e5d8a77551c863a4a3dec856c33939ea216e1898147a737a54e457e809",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-08-16T21:55:46Z",
    "title_canon_sha256": "bc01422ba536af0768bf7628466e83bb45f6f304854c3faae93b43ef20099978"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.03871",
    "kind": "arxiv",
    "version": 2
  }
}