Pith Number

pith:EIO2ZNBN

pith:2023:EIO2ZNBNQRTGUBCKUAGMFULUWR

not attested not anchored not stored refs pending

A Distance Measurement to M33 Using Optical Photometry of Mira Variables

Anupam Bhardwaj, Chow-Choong Ngeow, Frank J. Masci, Jia-Yu Ou, Matthew J. Graham, Reed Riddle, Russ R. Laher

arxiv:2302.02901 v1 · 2023-02-06 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EIO2ZNBNQRTGUBCKUAGMFULUWR}

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	2026-07-05T05:48:50.568083Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

221dacb42d84666a044aa00cc2d174b46c9ab30c653541e6a5243b7678cd3915

Aliases

arxiv: 2302.02901 · arxiv_version: 2302.02901v1 · doi: 10.48550/arxiv.2302.02901 · pith_short_12: EIO2ZNBNQRTG · pith_short_16: EIO2ZNBNQRTGUBCK · pith_short_8: EIO2ZNBN

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/EIO2ZNBNQRTGUBCKUAGMFULUWR \
  | 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: 221dacb42d84666a044aa00cc2d174b46c9ab30c653541e6a5243b7678cd3915

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ccfb62464c7a8c191d2b4f5780070fe8f292f54697846041291245adbf4a9a6",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2023-02-06T16:09:38Z",
    "title_canon_sha256": "50ce983cb5cda7b06a2ee863c8f55250ebe71f165013f6deb67b3332d3a80cb7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2302.02901",
    "kind": "arxiv",
    "version": 1
  }
}