Pith Number

pith:7BCTYYHK

pith:2013:7BCTYYHKBAA4EGY4FEG55Q5S6H

not attested not anchored not stored refs pending

Dynamical twisting and the b ghost in the pure spinor formalism

Nathan Berkovits (ICTP-SAIFR/IFT-UNESP, Sao Paulo)

arxiv:1305.0693 v1 · 2013-05-03 · 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{7BCTYYHKBAA4EGY4FEG55Q5S6H}

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	2026-05-18T01:50:12.792007Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8453c60ea0801c21b1c290ddec3b2f1ca8f3e23ff2fda806a7e624a060e6327

Aliases

arxiv: 1305.0693 · arxiv_version: 1305.0693v1 · doi: 10.48550/arxiv.1305.0693 · pith_short_12: 7BCTYYHKBAA4 · pith_short_16: 7BCTYYHKBAA4EGY4 · pith_short_8: 7BCTYYHK

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/7BCTYYHKBAA4EGY4FEG55Q5S6H \
  | 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: f8453c60ea0801c21b1c290ddec3b2f1ca8f3e23ff2fda806a7e624a060e6327

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ad9b7807ae892576299e060c9ec71489a9dad298bf38807ee319f0df4104397",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2013-05-03T13:08:59Z",
    "title_canon_sha256": "3d28a44e3710e943f547ac8133a9d05a05fc212948f6ff2b3f0f34b9bf036fd6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.0693",
    "kind": "arxiv",
    "version": 1
  }
}