Pith Number

pith:P7YUPFDM

pith:2009:P7YUPFDM6LTZ5XL3H5XZC2HA2B

not attested not anchored not stored refs pending

SAM Lectures on Extremal Black Holes in d=4 Extended Supergravity

A. Marrani, M. Gunaydin, S. Bellucci, S. Ferrara

arxiv:0905.3739 v1 · 2009-05-22 · 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{P7YUPFDM6LTZ5XL3H5XZC2HA2B}

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	2026-05-18T00:10:04.782926Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ff147946cf2e79edd7b3f6f9168e0d05e9a34c2621737212b40e8644d819ac2

Aliases

arxiv: 0905.3739 · arxiv_version: 0905.3739v1 · doi: 10.48550/arxiv.0905.3739 · pith_short_12: P7YUPFDM6LTZ · pith_short_16: P7YUPFDM6LTZ5XL3 · pith_short_8: P7YUPFDM

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/P7YUPFDM6LTZ5XL3H5XZC2HA2B \
  | 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: 7ff147946cf2e79edd7b3f6f9168e0d05e9a34c2621737212b40e8644d819ac2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "377ce3962685a87b20dfe1184b4c4ab3576246d18f426ef9e90b46f090dedc24",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2009-05-22T19:51:40Z",
    "title_canon_sha256": "1bcf318b81bc61774ad4c43307be7d36db9096ef70158b35655619075d1abe76"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.3739",
    "kind": "arxiv",
    "version": 1
  }
}