Pith Number

pith:M4Y5QOOS

pith:1993:M4Y5QOOSXWYEVVKSWNVR643W2S

not attested not anchored not stored refs pending

A New Approach to the Green-Schwarz Superstring

Nathan Berkovits

arxiv:hep-th/9306109 v1 · 1993-06-21 · 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{M4Y5QOOSXWYEVVKSWNVR643W2S}

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	2026-07-04T14:32:37.442116Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6731d839d2bdb04ad552b36b1f7376d4acb0389be4685f5d1366f204fd75bfaa

Aliases

arxiv: hep-th/9306109 · arxiv_version: hep-th/9306109v1 · doi: 10.48550/arxiv.hep-th/9306109 · pith_short_12: M4Y5QOOSXWYE · pith_short_16: M4Y5QOOSXWYEVVKS · pith_short_8: M4Y5QOOS

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/M4Y5QOOSXWYEVVKSWNVR643W2S \
  | 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: 6731d839d2bdb04ad552b36b1f7376d4acb0389be4685f5d1366f204fd75bfaa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eeed9e25fc7fd346d11ee2d463546cb933f451210514a1d96dd001eef91da8b4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "1993-06-21T21:07:00Z",
    "title_canon_sha256": "f0b9bba7891f59efbd935458a20745606729942c901612703ec1d479fd3390d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/9306109",
    "kind": "arxiv",
    "version": 1
  }
}