Pith Number

pith:ZJCSSKH6

pith:1999:ZJCSSKH6WA4Y3QOLHBZ76HD4OK

not attested not anchored not stored refs pending

A New Approach to Superstring Field Theory

Nathan Berkovits (IFT/UNESP, Sao Paulo)

arxiv:hep-th/9912121 v1 · 1999-12-14 · 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{ZJCSSKH6WA4Y3QOLHBZ76HD4OK}

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	2026-05-18T01:38:34.780115Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca452928feb0398dc1cb3873ff1c7c72b59878edf0c5df4bc6caab65059f59c5

Aliases

arxiv: hep-th/9912121 · arxiv_version: hep-th/9912121v1 · doi: 10.48550/arxiv.hep-th/9912121 · pith_short_12: ZJCSSKH6WA4Y · pith_short_16: ZJCSSKH6WA4Y3QOL · pith_short_8: ZJCSSKH6

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/ZJCSSKH6WA4Y3QOLHBZ76HD4OK \
  | 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: ca452928feb0398dc1cb3873ff1c7c72b59878edf0c5df4bc6caab65059f59c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "741ae3da1035786071926bcb251be26184eb13d7e7a5d92e3f6ba4e2fc702066",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "1999-12-14T17:01:20Z",
    "title_canon_sha256": "63b52ff76d6bfcea5c15a68350dc9425e4d7a3b28445274f7e3b600df838cd1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/9912121",
    "kind": "arxiv",
    "version": 1
  }
}