Pith Number

pith:2H22XY3T

pith:2009:2H22XY3TCR44H4ADCG6L6AY77L

not attested not anchored not stored refs pending

Supernovae as seen by off-center observers in a local void

Edvard Mortsell, Michael Blomqvist

arxiv:0909.4723 v2 · 2009-09-25 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2H22XY3TCR44H4ADCG6L6AY77L}

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	2026-05-18T02:34:27.593553Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1f5abe3731479c3f00311bcbf031ffafdee703550dd3abe7661747da1708057

Aliases

arxiv: 0909.4723 · arxiv_version: 0909.4723v2 · doi: 10.48550/arxiv.0909.4723 · pith_short_12: 2H22XY3TCR44 · pith_short_16: 2H22XY3TCR44H4AD · pith_short_8: 2H22XY3T

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/2H22XY3TCR44H4ADCG6L6AY77L \
  | 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: d1f5abe3731479c3f00311bcbf031ffafdee703550dd3abe7661747da1708057

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e4eb4dab809e378db2d1a84461c92845665933c85af63b50aa386b60b1aa338",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-25T15:32:43Z",
    "title_canon_sha256": "efac0f976794c2c1c0293d111cb3d142772a910d45282526e5927ace4e229424"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4723",
    "kind": "arxiv",
    "version": 2
  }
}