Pith Number

pith:ZW7QWION

pith:2009:ZW7QWIONUXBY7645TSPHZG5VSL

not attested not anchored not stored refs pending

Subaru and Gemini Observations of SS 433: New Constraint on the Mass of the Compact Object

A. Medvedev, E.A. Barsukova, K. Kubota, O. Sholukhova, S. Fabrika, V.P. Goranskij, Y. Ueda

arxiv:0912.2797 v1 · 2009-12-15 · astro-ph.SR

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	2026-05-18T02:33:56.509120Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cdbf0b21cda5c38ffb9d9c9e7c9bb592efc597e25e1f6b1fd62eeca041deed37

Aliases

arxiv: 0912.2797 · arxiv_version: 0912.2797v1 · doi: 10.48550/arxiv.0912.2797 · pith_short_12: ZW7QWIONUXBY · pith_short_16: ZW7QWIONUXBY7645 · pith_short_8: ZW7QWION

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/ZW7QWIONUXBY7645TSPHZG5VSL \
  | 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: cdbf0b21cda5c38ffb9d9c9e7c9bb592efc597e25e1f6b1fd62eeca041deed37

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8ab62bd563e7872c4832479a04b73b6c879f10e87ecc89ab0a708f85dea819d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-12-15T05:13:46Z",
    "title_canon_sha256": "9c4f8697345b7f95856e4ecfe757ba2b2c4f037137ea440175da59e0ef0c2874"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.2797",
    "kind": "arxiv",
    "version": 1
  }
}