Pith Number

pith:M4KAXTVH

pith:2015:M4KAXTVHQOP64HNBCSARTOLAQP

not attested not anchored not stored refs pending

Towards A Theory Of Quantum Computability

Andrea Masini, Simone Martini, Stefano Guerrini

arxiv:1504.02817 v1 · 2015-04-10 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{M4KAXTVHQOP64HNBCSARTOLAQP}

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	2026-05-18T02:18:59.917651Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

67140bcea7839fee1da1148119b96083c89284d1af5176aca712ddf10725ea8a

Aliases

arxiv: 1504.02817 · arxiv_version: 1504.02817v1 · doi: 10.48550/arxiv.1504.02817 · pith_short_12: M4KAXTVHQOP6 · pith_short_16: M4KAXTVHQOP64HNB · pith_short_8: M4KAXTVH

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/M4KAXTVHQOP64HNBCSARTOLAQP \
  | 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: 67140bcea7839fee1da1148119b96083c89284d1af5176aca712ddf10725ea8a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea362d5c1e40566414e1c1883792d8564f0dc4e157555ba06808b40b72095a62",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2015-04-10T23:58:00Z",
    "title_canon_sha256": "b1af59874e5ea3d66c89be6daaed7f9b6f6f41248b147abe388ef194b5de6015"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.02817",
    "kind": "arxiv",
    "version": 1
  }
}