Pith Number

pith:NV4FSPNI

pith:2009:NV4FSPNIIP2G4VAURS7UQ5N34R

not attested not anchored not stored refs pending

New Observations of the Very Luminous Supernova 2006gy: Evidence for Echoes

2. UCO, 3) (1. UC Berkeley, 3. UC Santa Cruz), A. A. Miller (1), A. V. Filippenko (1), J. S. Bloom (1), J. X. Prochaska (2, N. Smith (1), R. Chornock (1), W. Li (1)

arxiv:0906.2201 v2 · 2009-06-12 · astro-ph.CO · 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{NV4FSPNIIP2G4VAURS7UQ5N34R}

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	2026-05-18T02:24:55.502099Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d78593da843f46e54148cbf4875bbe4632de6cbb22b2bb06ada4ef01f243844

Aliases

arxiv: 0906.2201 · arxiv_version: 0906.2201v2 · doi: 10.48550/arxiv.0906.2201 · pith_short_12: NV4FSPNIIP2G · pith_short_16: NV4FSPNIIP2G4VAU · pith_short_8: NV4FSPNI

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/NV4FSPNIIP2G4VAURS7UQ5N34R \
  | 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: 6d78593da843f46e54148cbf4875bbe4632de6cbb22b2bb06ada4ef01f243844

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3100a2c9e14bd1c7137376e90e4b07c38e51bbfc6218313ba81b0cdb9292b2a3",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-06-12T11:27:48Z",
    "title_canon_sha256": "eb34ef90bd98274c6025335bb10c2ac518e2bab0554091ff4f9f8ae0bcc8f7e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.2201",
    "kind": "arxiv",
    "version": 2
  }
}