Pith Number

pith:CZ3LWYI2

pith:2015:CZ3LWYI2UUAQDMULO5PBC2UEPV

not attested not anchored not stored refs pending

500 Days of SN 2013dy: spectra and photometry from the ultraviolet to the infrared

A. Sternberg, A. V. Filippenko, F. Patat, F. Ropke, G. Folatelli, G. Pignata, I. Seitenzahl, J. C. Wheeler, J. D. Simon, J. M. Silverman, J. Vinko, K. I. Clubb, M. D. Stritzinger, M. Kromer, M. L. Graham, M. M. Phillips, O. D. Fox, P. Challis, R. J. Foley, R. Pakmor, R. P. Kirshner, S. Taubenberger, W. Hillebrandt, W. H. Lee, W. Zheng, Y.-C. Pan

arxiv:1504.02396 v2 · 2015-04-09 · astro-ph.HE · 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	2026-05-18T01:35:10.572499Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1676bb611aa50101b28b775e116a847d5878e4b2ad19552f06df0e2430a629ae

Aliases

arxiv: 1504.02396 · arxiv_version: 1504.02396v2 · doi: 10.48550/arxiv.1504.02396 · pith_short_12: CZ3LWYI2UUAQ · pith_short_16: CZ3LWYI2UUAQDMUL · pith_short_8: CZ3LWYI2

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/CZ3LWYI2UUAQDMULO5PBC2UEPV \
  | 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: 1676bb611aa50101b28b775e116a847d5878e4b2ad19552f06df0e2430a629ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c1dd23f0381e86b1cda26e6e5a1d1dc5064bdcd5eecb80d1e84ecec6024a524",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-04-09T17:25:17Z",
    "title_canon_sha256": "9938fc64e13bb1068ae14255ddbe14c7f9af34e0f0ab07477fd98482d7c51b03"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.02396",
    "kind": "arxiv",
    "version": 2
  }
}