Pith Number

pith:BM2A6AOY

pith:2025:BM2A6AOYGXGHPDLWJFBB4MV3DW

not attested not anchored not stored refs pending

Basis Vector Metric: A Method for Robust Open-Ended State Change Detection

David Oprea, Sam Powers

arxiv:2509.07308 v1 · 2025-09-09 · cs.CL · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BM2A6AOYGXGHPDLWJFBB4MV3DW}

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	2026-07-05T12:07:19.377885Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0b340f01d835cc778d7649421e32bb1d8fc80d960e057b7b1785a6074a53ef13

Aliases

arxiv: 2509.07308 · arxiv_version: 2509.07308v1 · doi: 10.48550/arxiv.2509.07308 · pith_short_12: BM2A6AOYGXGH · pith_short_16: BM2A6AOYGXGHPDLW · pith_short_8: BM2A6AOY

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/BM2A6AOYGXGHPDLWJFBB4MV3DW \
  | 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: 0b340f01d835cc778d7649421e32bb1d8fc80d960e057b7b1785a6074a53ef13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8709a3a1e72c0e925bad7c7030e1b2bff6a1553ac877fef4f156667ef2b1dc5b",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2025-09-09T00:58:43Z",
    "title_canon_sha256": "b66868d5a1c2a3e27b6cc11d72fa0c1b50eea4c65b5c5c8ac5a527cdd6683dc9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.07308",
    "kind": "arxiv",
    "version": 1
  }
}