Pith Number

pith:6DUEABI3

pith:2017:6DUEABI3TAH3ZL5WUUV4XG4NRY

not attested not anchored not stored refs pending

The Origin of the Possible Massive Black Hole in the Progenitor System of iPTF13bvn

Ryosuke Hirai

arxiv:1704.07663 v1 · 2017-04-25 · 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{6DUEABI3TAH3ZL5WUUV4XG4NRY}

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	2026-05-18T00:43:25.385330Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f0e840051b980fbcafb6a52bcb9b8d8e2f04486b8d490de9082ffff5542adc89

Aliases

arxiv: 1704.07663 · arxiv_version: 1704.07663v1 · doi: 10.48550/arxiv.1704.07663 · pith_short_12: 6DUEABI3TAH3 · pith_short_16: 6DUEABI3TAH3ZL5W · pith_short_8: 6DUEABI3

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/6DUEABI3TAH3ZL5WUUV4XG4NRY \
  | 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: f0e840051b980fbcafb6a52bcb9b8d8e2f04486b8d490de9082ffff5542adc89

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45256baa04e522a1589decabe9b00783cf4ce085552b6a329c72dbc764e7890e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2017-04-25T12:31:58Z",
    "title_canon_sha256": "558afb01b30e5d974908d1e964bd34428783db7e89d43018c0ef88bb017938a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.07663",
    "kind": "arxiv",
    "version": 1
  }
}