Pith Number

pith:CHPKBP2P

pith:2017:CHPKBP2POBOF7R4EZJAZBAYGEV

not attested not anchored not stored refs pending

Broad-lined type Ic supernova iPTF16asu: A challenge to all popular models

B. Li, H. Yu, J. S. Deng, J. Y. Wei, L. D. Liu, L. J. Wang, L. M. Song, S. Q. Wang, X. F. Wang, Y. L. Qiu, Z. Cano, Z. G. Dai

arxiv:1712.07359 v4 · 2017-12-20 · 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{CHPKBP2POBOF7R4EZJAZBAYGEV}

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	2026-07-05T00:04:55.472665Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

11dea0bf4f705c5fc784ca41908306254305663abd965978721b516440aa2057

Aliases

arxiv: 1712.07359 · arxiv_version: 1712.07359v4 · doi: 10.48550/arxiv.1712.07359 · pith_short_12: CHPKBP2POBOF · pith_short_16: CHPKBP2POBOF7R4E · pith_short_8: CHPKBP2P

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/CHPKBP2POBOF7R4EZJAZBAYGEV \
  | 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: 11dea0bf4f705c5fc784ca41908306254305663abd965978721b516440aa2057

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0908547009411476f89d47e4875aa1afd2fd5e2e0b0845b6e46858582789a3b5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2017-12-20T08:16:55Z",
    "title_canon_sha256": "d296a72d872d2cc548411654570bfc3a3cce853ccaf00680314186fed33baceb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.07359",
    "kind": "arxiv",
    "version": 4
  }
}