Pith Number

pith:CTH3K2L4

pith:2011:CTH3K2L4B3FQMMRC3CK4SHGUFD

not attested not anchored not stored refs pending

A contextual extension of Spekkens' toy model

Jan-{\AA}ke Larsson

arxiv:1111.3561 v1 · 2011-11-15 · 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{CTH3K2L4B3FQMMRC3CK4SHGUFD}

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	2026-05-18T02:42:06.387789Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

14cfb5697c0ecb063222d895c91cd428fb9782c374cddfa51c05e3f009a29965

Aliases

arxiv: 1111.3561 · arxiv_version: 1111.3561v1 · doi: 10.48550/arxiv.1111.3561 · pith_short_12: CTH3K2L4B3FQ · pith_short_16: CTH3K2L4B3FQMMRC · pith_short_8: CTH3K2L4

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/CTH3K2L4B3FQMMRC3CK4SHGUFD \
  | 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: 14cfb5697c0ecb063222d895c91cd428fb9782c374cddfa51c05e3f009a29965

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7ad67c8674c2a915b2d368698b57815300f5fd49b27c2c34be18a7f60720082",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-11-15T15:53:30Z",
    "title_canon_sha256": "809b6dc9a60f6ddf23a25dcc89a3706900003008c44ee901d4d415b48546769b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.3561",
    "kind": "arxiv",
    "version": 1
  }
}