Pith Number

pith:DJMXNH32

pith:2009:DJMXNH32TJG4J2PSHNXRX2HMEY

not attested not anchored not stored refs pending

The Mean Type Ia Supernova Spectrum Over the Past 9 Gigayears

A. Gal-Yam, A. Riess, D. A. Howell, M. Sullivan, P. E. Nugent, R. S. Ellis

arxiv:0901.2476 v1 · 2009-01-16 · astro-ph.SR · 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{DJMXNH32TJG4J2PSHNXRX2HMEY}

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	2026-05-18T04:29:17.350764Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1a59769f7a9a4dc4e9f23b6f1be8ec26103e9dcdfec4dd5ac057d39e47422364

Aliases

arxiv: 0901.2476 · arxiv_version: 0901.2476v1 · doi: 10.48550/arxiv.0901.2476 · pith_short_12: DJMXNH32TJG4 · pith_short_16: DJMXNH32TJG4J2PS · pith_short_8: DJMXNH32

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/DJMXNH32TJG4J2PSHNXRX2HMEY \
  | 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: 1a59769f7a9a4dc4e9f23b6f1be8ec26103e9dcdfec4dd5ac057d39e47422364

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6feb5d7cfddc0a40f5f78d92a1ab0b9912037f494dbddac8f46a6fd1456c9aaf",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-01-16T13:22:04Z",
    "title_canon_sha256": "786bc53d0f7c629bf6d7e6319ab729dfeed7c5f4421142d06de8e219c99cce32"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.2476",
    "kind": "arxiv",
    "version": 1
  }
}