Pith Number

pith:YHP2BHIL

pith:1992:YHP2BHILT6W6IMS2NJA33USKLD

not attested not anchored not stored refs pending

Calculation of Green-Schwarz Superstring Amplitudes Using the N=2 Twistor-String Formalism

Nathan Berkovits

arxiv:hep-th/9208035 v1 · 1992-08-13 · 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{YHP2BHILT6W6IMS2NJA33USKLD}

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	2026-07-04T15:55:24.107456Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c1dfa09d0b9fade4325a6a41bdd24a58c8c829d4762e4e45e4df705f4d12a82a

Aliases

arxiv: hep-th/9208035 · arxiv_version: hep-th/9208035v1 · doi: 10.48550/arxiv.hep-th/9208035 · pith_short_12: YHP2BHILT6W6 · pith_short_16: YHP2BHILT6W6IMS2 · pith_short_8: YHP2BHIL

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/YHP2BHILT6W6IMS2NJA33USKLD \
  | 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: c1dfa09d0b9fade4325a6a41bdd24a58c8c829d4762e4e45e4df705f4d12a82a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af8f78e8782bbaa7589db14bedf9045f23a04a46dab2b5241713bf50ec4bc5c1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "1992-08-13T01:43:45Z",
    "title_canon_sha256": "a255db6332bec2fe1647ab349fca76d258adc303d3f3ccc70ca35e9254b83e3d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/9208035",
    "kind": "arxiv",
    "version": 1
  }
}