Pith Number

pith:5A4YLTUM

pith:2026:5A4YLTUMSN4H3QAQ3WOWFSXMFC

not attested not anchored not stored refs pending

Learning Concepts, Not Tokens: Self-Supervised Semantic Alignment for Language Models

Chen Shani, Christine Zhang, Dan Jurafsky

arxiv:2603.29123 v2 · 2026-03-31 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5A4YLTUMSN4H3QAQ3WOWFSXMFC}

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	2026-05-26T02:04:09.743429Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e83985ce8c93787dc010dd9d62caec28a04c8e050f5d6ac0a213cb00316c2531

Aliases

arxiv: 2603.29123 · arxiv_version: 2603.29123v2 · doi: 10.48550/arxiv.2603.29123 · pith_short_12: 5A4YLTUMSN4H · pith_short_16: 5A4YLTUMSN4H3QAQ · pith_short_8: 5A4YLTUM

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/5A4YLTUMSN4H3QAQ3WOWFSXMFC \
  | 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: e83985ce8c93787dc010dd9d62caec28a04c8e050f5d6ac0a213cb00316c2531

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a7c80835ea209eea5bf336472150761b60486fb1f532a9bd93f3f5e6e699643c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-03-31T01:20:03Z",
    "title_canon_sha256": "9c0958d1adf10219f93675f73d40099a3445b9faed66fc12ca3241275b67eb90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.29123",
    "kind": "arxiv",
    "version": 2
  }
}