Pith Number

pith:N5MZB4WL

pith:2021:N5MZB4WLQE6AKJD4NLQQTUUP5U

not attested not anchored not stored refs pending

Model-independent measurement of the Hubble Constant and the absolute magnitude of Type Ia Supernovae

Jian-Chen Zhang, Kang Jiao, Tong-Jie Zhang

arxiv:2101.05897 v2 · 2021-01-14 · 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{N5MZB4WLQE6AKJD4NLQQTUUP5U}

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	2026-07-05T11:22:27.098663Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f5990f2cb813c05247c6ae109d28fed1db0ca9b7408151f2fa94a8676089f35

Aliases

arxiv: 2101.05897 · arxiv_version: 2101.05897v2 · doi: 10.48550/arxiv.2101.05897 · pith_short_12: N5MZB4WLQE6A · pith_short_16: N5MZB4WLQE6AKJD4 · pith_short_8: N5MZB4WL

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/N5MZB4WLQE6AKJD4NLQQTUUP5U \
  | 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: 6f5990f2cb813c05247c6ae109d28fed1db0ca9b7408151f2fa94a8676089f35

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aeb43cb50af3f867bd03a08d12690574d1838b713807e7b5190c4db04f5e16ea",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2021-01-14T22:43:52Z",
    "title_canon_sha256": "2f5e3a1d289ec40ac6695dc13cad365234526cd6fce07de77b8feeb13c2e138c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.05897",
    "kind": "arxiv",
    "version": 2
  }
}