Pith Number

pith:BBLTKSZN

pith:2021:BBLTKSZN3HIPODYLCCTUPHQGYW

not attested not anchored not stored refs pending

String theory at order $\alpha'^2$ and the generalized Bergshoeff-de Roo identification

Linus Wulff, Stanislav Hronek

arxiv:2109.12200 v2 · 2021-09-24 · 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{BBLTKSZN3HIPODYLCCTUPHQGYW}

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	2026-07-05T03:36:15.563443Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0857354b2dd9d0f70f0b10a7479e06c5a5f3a3f0538a9bb49ed0f66457f4c451

Aliases

arxiv: 2109.12200 · arxiv_version: 2109.12200v2 · doi: 10.48550/arxiv.2109.12200 · pith_short_12: BBLTKSZN3HIP · pith_short_16: BBLTKSZN3HIPODYL · pith_short_8: BBLTKSZN

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/BBLTKSZN3HIPODYLCCTUPHQGYW \
  | 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: 0857354b2dd9d0f70f0b10a7479e06c5a5f3a3f0538a9bb49ed0f66457f4c451

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "580df2e652ba613ae41a94099d03793b862ba6fa7088d8e06de777a73bbf9670",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2021-09-24T21:17:43Z",
    "title_canon_sha256": "68497bbcf1fba46541d84a0004a827015557d90e91857b3167c788ce4244f568"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.12200",
    "kind": "arxiv",
    "version": 2
  }
}