Pith Number

pith:U5SL6Z3O

pith:2011:U5SL6Z3OVNB2DBVBK3ZC7OV2RT

not attested not anchored not stored refs pending

The 44Ti-powered spectrum of SN 1987A

Anders Jerkstrand, Cecilia Kozma, Claes Fransson

arxiv:1103.3653 v4 · 2011-03-18 · 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{U5SL6Z3OVNB2DBVBK3ZC7OV2RT}

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	2026-05-18T02:02:49.704866Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a764bf676eab43a186a156f22fbaba8cd81d9e83d93096d0a3f8880edc372374

Aliases

arxiv: 1103.3653 · arxiv_version: 1103.3653v4 · doi: 10.48550/arxiv.1103.3653 · pith_short_12: U5SL6Z3OVNB2 · pith_short_16: U5SL6Z3OVNB2DBVB · pith_short_8: U5SL6Z3O

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/U5SL6Z3OVNB2DBVBK3ZC7OV2RT \
  | 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: a764bf676eab43a186a156f22fbaba8cd81d9e83d93096d0a3f8880edc372374

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a5ccd14aab1641a853039eb54e790d2a07ca4eb8116799f847f68295e6db1239",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-03-18T15:54:36Z",
    "title_canon_sha256": "ca6cc2cb30ff85d3253ca7074a670b89c77f8932814eac44ff0595232cec39e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.3653",
    "kind": "arxiv",
    "version": 4
  }
}