Pith Number

pith:GCPR35KD

pith:2013:GCPR35KDJSRGPDY5ND5RDAJDYF

not attested not anchored not stored refs pending

Spectropolarimetry of the Type Ia Supernova 2012fr

A. Clocchiatti, D. Baade, E. Reilly, F. Patat, J.C. Wheeler, J.R. Maund, J. Spyromilio, L. Wang, P.A. Hoeflich, P. Zelaya

arxiv:1302.0166 v1 · 2013-02-01 · 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	2026-05-18T01:51:51.435327Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

309f1df5434ca2678f1d68fb118123c155d32c8b8e5fe8b52eaac629cc42f6dc

Aliases

arxiv: 1302.0166 · arxiv_version: 1302.0166v1 · doi: 10.48550/arxiv.1302.0166 · pith_short_12: GCPR35KDJSRG · pith_short_16: GCPR35KDJSRGPDY5 · pith_short_8: GCPR35KD

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/GCPR35KDJSRGPDY5ND5RDAJDYF \
  | 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: 309f1df5434ca2678f1d68fb118123c155d32c8b8e5fe8b52eaac629cc42f6dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7295faaded5bbca3d1ea657210949fffb141f84a6854421942f670ca2f2b63ed",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-02-01T12:47:08Z",
    "title_canon_sha256": "cfebb95fd0fb183a0b7de87d0f658159bf15301f2befc632fd11f60912432967"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.0166",
    "kind": "arxiv",
    "version": 1
  }
}