Pith Number

pith:BOAVLGV3

pith:2025:BOAVLGV3UMWFTKLZJAIAEFWDH3

not attested not anchored not stored refs pending

Constructor theory of time

Chiara Marletto, David Deutsch

arxiv:2505.08692 v3 · 2025-05-13 · 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{BOAVLGV3UMWFTKLZJAIAEFWDH3}

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	2026-06-09T01:04:38.581770Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0b81559abba32c59a97948100216c33ee0f3be16b47e0827fd37638a4f57c125

Aliases

arxiv: 2505.08692 · arxiv_version: 2505.08692v3 · doi: 10.48550/arxiv.2505.08692 · pith_short_12: BOAVLGV3UMWF · pith_short_16: BOAVLGV3UMWFTKLZ · pith_short_8: BOAVLGV3

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/BOAVLGV3UMWFTKLZJAIAEFWDH3 \
  | 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: 0b81559abba32c59a97948100216c33ee0f3be16b47e0827fd37638a4f57c125

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d75e3d109d3911115379ea32432801aef80cc15cd6697e2171ba82f1dc29afd7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-05-13T15:50:46Z",
    "title_canon_sha256": "e668ed02b96bf7244f489c16a49d9f727ce7390b9f7fd0eaa73634e659d47284"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.08692",
    "kind": "arxiv",
    "version": 3
  }
}