Pith Number

pith:VGFQGWV2

pith:2009:VGFQGWV2SBQ2M2FVLEGFXFKHMG

not attested not anchored not stored refs pending

VLT Spectropolarimetry of the fast expanding Type Ia SN2006X

D. Baade, F. Patat, J. C. Wheeler, J. R. Maund, L. Wang, P. Hoeflich

arxiv:0909.5564 v1 · 2009-09-30 · astro-ph.SR · astro-ph.CO

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	2026-05-18T04:37:33.764302Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a98b035aba9061a668b5590c5b9547618fba4c81b6c3b2e44f1d7763d91497fa

Aliases

arxiv: 0909.5564 · arxiv_version: 0909.5564v1 · doi: 10.48550/arxiv.0909.5564 · pith_short_12: VGFQGWV2SBQ2 · pith_short_16: VGFQGWV2SBQ2M2FV · pith_short_8: VGFQGWV2

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/VGFQGWV2SBQ2M2FVLEGFXFKHMG \
  | 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: a98b035aba9061a668b5590c5b9547618fba4c81b6c3b2e44f1d7763d91497fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc6d7936936fe91f2d366d3afe4361b464b5e55c345095ede642c50dd1126317",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-09-30T10:40:06Z",
    "title_canon_sha256": "2cdbeb764788e5857f25bc50bf2a00e377a4fc8db6e3ab2bfbd767b2a5edc350"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.5564",
    "kind": "arxiv",
    "version": 1
  }
}