Pith Number

pith:LF4DS6V7

pith:2009:LF4DS6V7UAVXF7NWZ4ZVPCAPJT

not attested not anchored not stored refs pending

The unusual 2006 dwarf nova outburst of GK Perseii

A.P. Beardmore, G.A. Wynn (U. Leicester), J.P. Osborne, P.A. Evans

arxiv:0907.1407 v1 · 2009-07-09 · 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	2026-05-18T02:13:04.471486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5978397abfa02b72fdb6cf3357880f4cde5e7850ccea51215cbc4d309e05ca2f

Aliases

arxiv: 0907.1407 · arxiv_version: 0907.1407v1 · doi: 10.48550/arxiv.0907.1407 · pith_short_12: LF4DS6V7UAVX · pith_short_16: LF4DS6V7UAVXF7NW · pith_short_8: LF4DS6V7

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/LF4DS6V7UAVXF7NWZ4ZVPCAPJT \
  | 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: 5978397abfa02b72fdb6cf3357880f4cde5e7850ccea51215cbc4d309e05ca2f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a43e6383b0c12c3d60f68eba2e7c090ede2836dca09d222b906fd3929524832",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-07-09T06:24:33Z",
    "title_canon_sha256": "e1b5cfc28c3dbe54a9fcd5bf10f55091820fa1b74ea6bab89a36fa51d6009df9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.1407",
    "kind": "arxiv",
    "version": 1
  }
}