Pith Number

pith:AYHRT4YS

pith:2009:AYHRT4YSFB4KV3COECL2M4GXPZ

not attested not anchored not stored refs pending

Standardization, Distance, Host Galaxy Extinction of Type Ia Supernova and Hubble Diagram from the Flux Ratio Method

Bo Yu, Gui-Lin Yang, Tan Lu

arxiv:0910.5638 v2 · 2009-10-29 · 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{AYHRT4YSFB4KV3COECL2M4GXPZ}

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	2026-07-04T17:31:02.837257Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

060f19f3122878aaec4e2097a670d77e730be221c2207270448f001defcb09b9

Aliases

arxiv: 0910.5638 · arxiv_version: 0910.5638v2 · doi: 10.48550/arxiv.0910.5638 · pith_short_12: AYHRT4YSFB4K · pith_short_16: AYHRT4YSFB4KV3CO · pith_short_8: AYHRT4YS

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/AYHRT4YSFB4KV3COECL2M4GXPZ \
  | 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: 060f19f3122878aaec4e2097a670d77e730be221c2207270448f001defcb09b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "34f6d32cb4716423297e37d45c923dab51a6b0753a1971ab57891fb6fcebb4dc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-29T14:04:24Z",
    "title_canon_sha256": "2b0e5faf4bbb5bcbe3c0e353a38651d2d61c3c7c48dfe2b8141fb33d52f558d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.5638",
    "kind": "arxiv",
    "version": 2
  }
}