Pith Number

pith:A75CDM22

pith:1999:A75CDM22BZHSAJ2MEH6ZQCNF4V

not attested not anchored not stored refs pending

Four-Point Amplitude from Open Superstring Field Theory

Carlos Tello Echevarria (IFT/UNESP, Nathan Berkovits, Sao Paulo)

arxiv:hep-th/9912120 v2 · 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{A75CDM22BZHSAJ2MEH6ZQCNF4V}

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	2026-07-04T16:15:05.118606Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07fa21b35a0e4f20274c21fd9809a5e5667c0deca4c67c485f0330313734c5ce

Aliases

arxiv: hep-th/9912120 · arxiv_version: hep-th/9912120v2 · doi: 10.48550/arxiv.hep-th/9912120 · pith_short_12: A75CDM22BZHS · pith_short_16: A75CDM22BZHSAJ2M · pith_short_8: A75CDM22

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/A75CDM22BZHSAJ2MEH6ZQCNF4V \
  | 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: 07fa21b35a0e4f20274c21fd9809a5e5667c0deca4c67c485f0330313734c5ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "37c7350b4ad545810fff2c8a9c7cabc82045c6e18102db6be7bde7c1be177e35",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "1999-12-14T16:52:53Z",
    "title_canon_sha256": "da37d09efe4e30394e4a4854633a5b372b3a1b286fb5ca7695d3d5fafc462491"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/9912120",
    "kind": "arxiv",
    "version": 2
  }
}