Pith Number

pith:AC7P4YUS

pith:2019:AC7P4YUSSAQCSURX2VMULVP6Z3

not attested not anchored not stored refs pending

On the photometric and spectroscopic diversity of Type II supernovae

D. John Hillier, Luc Dessart

arxiv:1908.02973 v1 · 2019-08-08 · astro-ph.SR · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AC7P4YUSSAQCSURX2VMULVP6Z3}

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	2026-07-05T00:12:04.451498Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00befe62929020295237d55945d5feceed2cb44d505bd1656d27102a05523a6b

Aliases

arxiv: 1908.02973 · arxiv_version: 1908.02973v1 · doi: 10.48550/arxiv.1908.02973 · pith_short_12: AC7P4YUSSAQC · pith_short_16: AC7P4YUSSAQCSURX · pith_short_8: AC7P4YUS

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/AC7P4YUSSAQCSURX2VMULVP6Z3 \
  | 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: 00befe62929020295237d55945d5feceed2cb44d505bd1656d27102a05523a6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32495098bc0bbe0ea438b4440914d0645d02a225565fe0177e3a959e44e2527c",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-08-08T08:28:47Z",
    "title_canon_sha256": "4ceb5c9c063a6f15c5aeac80b9a85eb0f56ced1f3256db647d45e5b797ded78f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.02973",
    "kind": "arxiv",
    "version": 1
  }
}