Pith Number

pith:WZVYLAH4

pith:2014:WZVYLAH4Y2KO434AZXUCYFG72L

not attested not anchored not stored refs pending

Twistor Origin of the Superstring

Nathan Berkovits (ICTP-SAIFR/IFT-UNESP, Sao Paulo)

arxiv:1409.2510 v2 · 2014-09-08 · 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{WZVYLAH4Y2KO434AZXUCYFG72L}

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	2026-05-18T02:23:58.472851Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b66b8580fcc694ee6f80cde82c14dfd2c5fc25105009657062a43dd8c3bb13a6

Aliases

arxiv: 1409.2510 · arxiv_version: 1409.2510v2 · doi: 10.48550/arxiv.1409.2510 · pith_short_12: WZVYLAH4Y2KO · pith_short_16: WZVYLAH4Y2KO434A · pith_short_8: WZVYLAH4

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/WZVYLAH4Y2KO434AZXUCYFG72L \
  | 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: b66b8580fcc694ee6f80cde82c14dfd2c5fc25105009657062a43dd8c3bb13a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02ddbf37fb65a6f903f510efb1086301a4dc1d91e251329fa794633f6223a7b1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2014-09-08T20:21:47Z",
    "title_canon_sha256": "f85c31e28458c763cf8f01cb2793fadfd41fe7fc0507abd51909af6375cb16e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.2510",
    "kind": "arxiv",
    "version": 2
  }
}