Pith Number

pith:HD44R5R4

pith:2012:HD44R5R46UNKPPVTXZRQSXIRPE

not attested not anchored not stored refs pending

Exact solution for two unequal counter-rotating black holes

Claus L\"ammerzahl, I. Cabrera-Munguia

arxiv:1208.5824 v3 · 2012-08-29 · gr-qc

Open paper page JSON Open Graph Bundle Merged state 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

✓ 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	2026-05-18T01:54:50.523767Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38f9c8f63cf51aa7beb3be63095d1179237914a28bc9bc5e836973a1031f0321

Aliases

arxiv: 1208.5824 · arxiv_version: 1208.5824v3 · doi: 10.48550/arxiv.1208.5824 · pith_short_12: HD44R5R46UNK · pith_short_16: HD44R5R46UNKPPVT · pith_short_8: HD44R5R4

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/HD44R5R46UNKPPVTXZRQSXIRPE \
  | 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: 38f9c8f63cf51aa7beb3be63095d1179237914a28bc9bc5e836973a1031f0321

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "db6de87866923c6e07640bea3026f82add442fbeacbdd2885219cf5dec3a3ed9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-08-29T02:30:46Z",
    "title_canon_sha256": "564404c862845504265dacbaffc47f736e253ece22d31021c99b3d15190c33d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.5824",
    "kind": "arxiv",
    "version": 3
  }
}