Pith Number

pith:YJAMKYGN

pith:2012:YJAMKYGNRYIKOCZX42RR3VD2UW

not attested not anchored not stored refs pending

Span programs and quantum algorithms for st-connectivity and claw detection

Aleksandrs Belovs, Ben W. Reichardt

arxiv:1203.2603 v1 · 2012-03-12 · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YJAMKYGNRYIKOCZX42RR3VD2UW}

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	2026-05-18T03:40:26.347522Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c240c560cd8e10a70b37e6a31dd47aa5828c2e0a85fc72bd3c11c693d65fac84

Aliases

arxiv: 1203.2603 · arxiv_version: 1203.2603v1 · doi: 10.48550/arxiv.1203.2603 · pith_short_12: YJAMKYGNRYIK · pith_short_16: YJAMKYGNRYIKOCZX · pith_short_8: YJAMKYGN

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/YJAMKYGNRYIKOCZX42RR3VD2UW \
  | 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: c240c560cd8e10a70b37e6a31dd47aa5828c2e0a85fc72bd3c11c693d65fac84

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad12dedbc204f09d6b6d7113a0f990697b7cdfc835af3f722587fc3a64af95ac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-03-12T19:59:08Z",
    "title_canon_sha256": "e0dd6090d98e05208d5274221f267d7a6416b5384f7a217094b0ea92d9094a50"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.2603",
    "kind": "arxiv",
    "version": 1
  }
}