Pith Number

pith:D4QGOOFK

pith:2000:D4QGOOFKXHWXSFSRBCYSR4ASHF

not attested not anchored not stored refs pending

D-branes in type I string theory

A.Lerda, L. Gallot, M. Frau, P.Strigazzi

arxiv:hep-th/0012167 v2 · 2000-12-19 · 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{D4QGOOFKXHWXSFSRBCYSR4ASHF}

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	2026-05-18T01:38:54.978643Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f206738aab9ed79165108b128f0123969abb5a640cb2ddd365aff517585d49b

Aliases

arxiv: hep-th/0012167 · arxiv_version: hep-th/0012167v2 · doi: 10.48550/arxiv.hep-th/0012167 · pith_short_12: D4QGOOFKXHWX · pith_short_16: D4QGOOFKXHWXSFSR · pith_short_8: D4QGOOFK

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/D4QGOOFKXHWXSFSRBCYSR4ASHF \
  | 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: 1f206738aab9ed79165108b128f0123969abb5a640cb2ddd365aff517585d49b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd16c2ac5bdaf07bc1b6fc9ca7819676c3fc2ae8877a7d95c72da35bdb010d2a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "2000-12-19T09:12:07Z",
    "title_canon_sha256": "43ea5eb2160bb81c9b148f5b4c12e98b1d9a94e98fa1b9308b037dfcc59c465c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/0012167",
    "kind": "arxiv",
    "version": 2
  }
}