Pith Number

pith:6Y7L3TMB

pith:2010:6Y7L3TMB5WUDOUW3ZIQMXZONE3

not attested not anchored not stored refs pending

The universality of iterated hashing over variable-length strings

Daniel Lemire

arxiv:1008.1715 v5 · 2010-08-10 · cs.DB · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6Y7L3TMB5WUDOUW3ZIQMXZONE3}

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	2026-05-18T04:03:54.695046Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f63ebdcd81eda83752dbca20cbe5cd26d4b3102f686a49791f78e5ce51a94017

Aliases

arxiv: 1008.1715 · arxiv_version: 1008.1715v5 · doi: 10.48550/arxiv.1008.1715 · pith_short_12: 6Y7L3TMB5WUD · pith_short_16: 6Y7L3TMB5WUDOUW3 · pith_short_8: 6Y7L3TMB

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/6Y7L3TMB5WUDOUW3ZIQMXZONE3 \
  | 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: f63ebdcd81eda83752dbca20cbe5cd26d4b3102f686a49791f78e5ce51a94017

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "365b6b1e1a6c84c1373aa4b0e915572e0896568206700e6b3bc568c55e66435a",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2010-08-10T14:05:28Z",
    "title_canon_sha256": "fd4ed9cc7728a78b9a3e7364da67bd87a318896eb17cd032a7bd6ec188024b0f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.1715",
    "kind": "arxiv",
    "version": 5
  }
}