Pith Number

pith:TWQY32OF

pith:2015:TWQY32OFWSAUC2SEIT6QJ4XVDA

not attested not anchored not stored refs pending

Fast Witness Extraction Using a Decision Oracle

Andreas Bj\"orklund, {\L}ukasz Kowalik, Petteri Kaski

arxiv:1508.03572 v1 · 2015-08-14 · 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{TWQY32OFWSAUC2SEIT6QJ4XVDA}

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	2026-05-18T01:35:17.351804Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9da18de9c5b481416a4444fd04f2f5180d9b89233f110c45cb1652423c4734e7

Aliases

arxiv: 1508.03572 · arxiv_version: 1508.03572v1 · doi: 10.48550/arxiv.1508.03572 · pith_short_12: TWQY32OFWSAU · pith_short_16: TWQY32OFWSAUC2SE · pith_short_8: TWQY32OF

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/TWQY32OFWSAUC2SEIT6QJ4XVDA \
  | 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: 9da18de9c5b481416a4444fd04f2f5180d9b89233f110c45cb1652423c4734e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a20fdd7719859871c74c5fe273e380cee68ca8e9c4d17347f05afd7b63caceb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-08-14T17:13:13Z",
    "title_canon_sha256": "7caa57a0c7d5ec8c779cc1c8b2bc28df3d532fabb49402afda22a27c7f5c334f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.03572",
    "kind": "arxiv",
    "version": 1
  }
}