Pith Number

pith:ERLSHMB5

pith:2019:ERLSHMB5HJMTNH3HTABEY2PBAK

not attested not anchored not stored refs pending

Discovery of a red supergiant donor star in SN2010da/NGC 300 ULX-1

B. Davies, B.W. Grefenstette, D.J. Walton, F.A. Harrison, F. F\"urst, F. Tramper, J.A. Kennea, M. Brightman, M. Heida, R.M. Lau

arxiv:1909.02171 v1 · 2019-09-05 · astro-ph.HE · astro-ph.GA · 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{ERLSHMB5HJMTNH3HTABEY2PBAK}

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	2026-07-05T00:08:39.100986Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

245723b03d3a59369f6798024c69e1028633f766717ed9ad804b20f28f94cd17

Aliases

arxiv: 1909.02171 · arxiv_version: 1909.02171v1 · doi: 10.48550/arxiv.1909.02171 · pith_short_12: ERLSHMB5HJMT · pith_short_16: ERLSHMB5HJMTNH3H · pith_short_8: ERLSHMB5

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/ERLSHMB5HJMTNH3HTABEY2PBAK \
  | 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: 245723b03d3a59369f6798024c69e1028633f766717ed9ad804b20f28f94cd17

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "99a2ead0fc7b6e534097b09414f2de876863202e45c0b71432415f7ecb55e578",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-09-05T00:56:24Z",
    "title_canon_sha256": "3f357c2f48f6f223bef3b6be486c6e491e965a3feea59054af5b6e098db6ad4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.02171",
    "kind": "arxiv",
    "version": 1
  }
}