Pith Number

pith:2JUVTEE4

pith:2026:2JUVTEE4W2ECUJWV6GSEX53XPO

not attested not anchored not stored refs pending

The quantum instrument monad

Tobias Fritz

arxiv:2606.27805 v1 · 2026-06-26 · cs.LO · cs.PL · math.CT · 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{2JUVTEE4W2ECUJWV6GSEX53XPO}

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	2026-06-29T01:14:49.021977Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d26959909cb6882a26d5f1a44bf7777b83c9ce6cc87168cbf4a2712179ea3481

Aliases

arxiv: 2606.27805 · arxiv_version: 2606.27805v1 · doi: 10.48550/arxiv.2606.27805 · pith_short_12: 2JUVTEE4W2EC · pith_short_16: 2JUVTEE4W2ECUJWV · pith_short_8: 2JUVTEE4

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/2JUVTEE4W2ECUJWV6GSEX53XPO \
  | 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: d26959909cb6882a26d5f1a44bf7777b83c9ce6cc87168cbf4a2712179ea3481

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5cf1ff7408a0e6641b73ee91c32e2b279b6850a3578db806f7f706fc5f3921ff",
    "cross_cats_sorted": [
      "cs.PL",
      "math.CT",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2026-06-26T07:45:03Z",
    "title_canon_sha256": "5c7acdbaeedf33b4823fba8745c1b6db3891644b60f695e58c14deb83293ad3d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.27805",
    "kind": "arxiv",
    "version": 1
  }
}