Pith Number

pith:FUMPT63B

pith:2011:FUMPT63BIUQK3RD6FY3ZTFEKVM

not attested not anchored not stored refs pending

Independent sets of words and the synchronization problem

Arturo Carpi, Flavio D'Alessandro

arxiv:1111.5467 v1 · 2011-11-23 · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FUMPT63BIUQK3RD6FY3ZTFEKVM}

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	2026-05-18T04:07:43.649045Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d18f9fb614520adc47e2e3799948aab3df019ec6d599eb9fd3ec02e33a667b3

Aliases

arxiv: 1111.5467 · arxiv_version: 1111.5467v1 · doi: 10.48550/arxiv.1111.5467 · pith_short_12: FUMPT63BIUQK · pith_short_16: FUMPT63BIUQK3RD6 · pith_short_8: FUMPT63B

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/FUMPT63BIUQK3RD6FY3ZTFEKVM \
  | 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: 2d18f9fb614520adc47e2e3799948aab3df019ec6d599eb9fd3ec02e33a667b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3d068bffdeedaf41fe103a1e297192a67ca6c1c97e4d3ef6647e9d0077360fc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2011-11-23T11:53:46Z",
    "title_canon_sha256": "4ac3c1dee01d0255a60275486f48cffbf130b8e48b3d08042f2b302675ead71e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.5467",
    "kind": "arxiv",
    "version": 1
  }
}