Pith Number

pith:SMTORCKT

pith:2021:SMTORCKTUYR54VX73BN6JHC5C2

not attested not anchored not stored refs pending

A Tip of the Red Giant Branch Distance of $22.1 \pm 1.2$ Mpc to the Dark Matter Deficient Galaxy NGC1052-DF2 from 40 Orbits of Hubble Space Telescope Imaging

Aaron J. Romanowsky, Andrew E. Dolphin, Charlie Conroy, Dhruba Dutta Chowdhury, Jean P. Brodie, J. M. Diederik Kruijssen, Pieter van Dokkum, Roberto Abraham, Shany Danieli, Zili Shen

arxiv:2104.03319 v2 · 2021-04-07 · 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{SMTORCKTUYR54VX73BN6JHC5C2}

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	2026-07-05T02:51:22.271558Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9326e88953a623de56ffd85be49c5d16afdd8bb341e39807ceae430152668d63

Aliases

arxiv: 2104.03319 · arxiv_version: 2104.03319v2 · doi: 10.48550/arxiv.2104.03319 · pith_short_12: SMTORCKTUYR5 · pith_short_16: SMTORCKTUYR54VX7 · pith_short_8: SMTORCKT

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/SMTORCKTUYR54VX73BN6JHC5C2 \
  | 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: 9326e88953a623de56ffd85be49c5d16afdd8bb341e39807ceae430152668d63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb9efae5f28cc55aa4011db9042fcabc6b7b6c1c42326ef9a1fda53b8af7e085",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-04-07T18:00:02Z",
    "title_canon_sha256": "401603c037586373e2f33e9f6a9beddf479fa3589012c346d33d864f65c69749"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.03319",
    "kind": "arxiv",
    "version": 2
  }
}