Pith Number

pith:I5KUPNI4

pith:2009:I5KUPNI4NWK4VVX6DNJ4JMXJDY

not attested not anchored not stored refs pending

Freedom and Constraints in the K3 Landscape

Vijay Kumar, Washington Taylor

arxiv:0903.0386 v4 · 2009-03-03 · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I5KUPNI4NWK4VVX6DNJ4JMXJDY}

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	2026-05-18T03:52:28.683786Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

475547b51c6d95cad6fe1b53c4b2e91e0b64ad64f05fdf76667a8af639ebab2b

Aliases

arxiv: 0903.0386 · arxiv_version: 0903.0386v4 · doi: 10.48550/arxiv.0903.0386 · pith_short_12: I5KUPNI4NWK4 · pith_short_16: I5KUPNI4NWK4VVX6 · pith_short_8: I5KUPNI4

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/I5KUPNI4NWK4VVX6DNJ4JMXJDY \
  | 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: 475547b51c6d95cad6fe1b53c4b2e91e0b64ad64f05fdf76667a8af639ebab2b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de7a653899dd3317e7c00792880e4ec1ddc0bec92ee8db5f26e94f48743e37f8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2009-03-03T19:49:31Z",
    "title_canon_sha256": "ff7613b22f744203f95357141849ec9cd3327a912d0baa64c73b163405f90dcc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.0386",
    "kind": "arxiv",
    "version": 4
  }
}