Pith Number

pith:TVF4OZU3

pith:2020:TVF4OZU3FD3OXITYYGOX5TWOXQ

not attested not anchored not stored refs pending

Retentive Lenses

Hsiang-Shang Ko, Zhenjiang Hu, Zhixuan Yang, Zirun Zhu

arxiv:2001.02031 v2 · 2020-01-07 · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TVF4OZU3FD3OXITYYGOX5TWOXQ}

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	2026-07-05T00:32:22.826045Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d4bc7669b28f6eba278c19d7ececebc21dcd0d1bba204682c6916aefef39290

Aliases

arxiv: 2001.02031 · arxiv_version: 2001.02031v2 · doi: 10.48550/arxiv.2001.02031 · pith_short_12: TVF4OZU3FD3O · pith_short_16: TVF4OZU3FD3OXITY · pith_short_8: TVF4OZU3

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/TVF4OZU3FD3OXITYYGOX5TWOXQ \
  | 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: 9d4bc7669b28f6eba278c19d7ececebc21dcd0d1bba204682c6916aefef39290

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "252f09bc801e30775b8a9c6386bf0f64d49ebee2a1828651fb1404522937b78c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2020-01-07T13:52:29Z",
    "title_canon_sha256": "514d3aff05580858e7fdfc7ee34a9a7ebe29ec2b9bf9a098ad91246f2a86f187"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.02031",
    "kind": "arxiv",
    "version": 2
  }
}