Pith Number

pith:G22TFVPH

pith:1999:G22TFVPHTKIXBLYJROT4LZEING

not attested not anchored not stored refs pending

Closed N=2 Strings: Picture-Changing, Hidden Symmetries and SDG Hierarchy

Alexander D. Popov, Olaf Lechtenfeld

arxiv:hep-th/9912154 v1 · 1999-12-16 · hep-th

Open paper page JSON What is a Pith Number?

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

Receipt and verification

First computed	2026-05-18T00:53:51.904809Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

36b532d5e79a9170af098ba7c5e48869b6c62ebcd789a6d0b7bb62dbae47f447

Aliases

arxiv: hep-th/9912154 · arxiv_version: hep-th/9912154v1 · doi: 10.48550/arxiv.hep-th/9912154

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/G22TFVPHTKIXBLYJROT4LZEING \
  | 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: 36b532d5e79a9170af098ba7c5e48869b6c62ebcd789a6d0b7bb62dbae47f447

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ce9df52ce758c68950134857c6dd761cf943e5123e4d4437a25ac82cc9a6c73",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "1999-12-16T22:10:16Z",
    "title_canon_sha256": "5148e7507a16ac9b147000858688d938f6108bc7ac3a2fee98badd33c4f3d11c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/9912154",
    "kind": "arxiv",
    "version": 1
  }
}