Pith Number

pith:IZV2ZYSV

pith:2010:IZV2ZYSVQMIQ2IVRJHG3E77Z5X

not attested not anchored not stored refs pending

On the Interpretation of Supernova Light Echo Profiles and Spectra

A. Rest, B. Sinnott, D. L. Welch, G. Narayan, K. Mandel, M. Huber, R. J. Foley, S. Blondin

arxiv:1004.3783 v2 · 2010-04-21 · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IZV2ZYSVQMIQ2IVRJHG3E77Z5X}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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	2026-05-18T02:07:55.522110Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

466bace25583110d22b149cdb27ff9edca24f36d4b1bee7e0f53383a71dc885a

Aliases

arxiv: 1004.3783 · arxiv_version: 1004.3783v2 · doi: 10.48550/arxiv.1004.3783 · pith_short_12: IZV2ZYSVQMIQ · pith_short_16: IZV2ZYSVQMIQ2IVR · pith_short_8: IZV2ZYSV

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/IZV2ZYSVQMIQ2IVRJHG3E77Z5X \
  | 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: 466bace25583110d22b149cdb27ff9edca24f36d4b1bee7e0f53383a71dc885a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "161d159a901473859bb990bc88738d84bb5fd89a3629ec0f9446c9782da9e634",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-04-21T20:00:00Z",
    "title_canon_sha256": "f5f3515ea8d122fdcbb5f2e2c6d7f9ea087d10fbf0e8a6aec9b9ed3a42498826"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.3783",
    "kind": "arxiv",
    "version": 2
  }
}