Pith Number

pith:WLBYHCSJ

pith:2009:WLBYHCSJ3KH6ES2MS4HEXSBHVO

not attested not anchored not stored refs pending

SNANA: A Public Software Package for Supernova Analysis

Benjamin Dilday, David Cinabro, Gajus Miknaitis, Jake Vanderplas, Joseph P. Bernstein, Joshua A. Frieman, Masao Sako, Matt Taylor, Richard Kessler, Saurabh Jha, Stephen Kuhlmann

arxiv:0908.4280 v1 · 2009-08-28 · astro-ph.CO · astro-ph.IM

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

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	2026-05-18T02:12:13.201202Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2c3838a49da8fe24b4c970e4bc827ab9d0f1ff37f1c2084a9d3e46c7e12a6db

Aliases

arxiv: 0908.4280 · arxiv_version: 0908.4280v1 · doi: 10.48550/arxiv.0908.4280 · pith_short_12: WLBYHCSJ3KH6 · pith_short_16: WLBYHCSJ3KH6ES2M · pith_short_8: WLBYHCSJ

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/WLBYHCSJ3KH6ES2MS4HEXSBHVO \
  | 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: b2c3838a49da8fe24b4c970e4bc827ab9d0f1ff37f1c2084a9d3e46c7e12a6db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cbd739068c8146abf8551d7f19fbac24ee61315404d7bf237d25e43824ba6066",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-08-28T21:03:08Z",
    "title_canon_sha256": "832639688d5301a0a5e47362a5dbb38bb4de0ba6ea6fe435eb3d921f4834173e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.4280",
    "kind": "arxiv",
    "version": 1
  }
}