Pith Number

pith:HT4QYAMA

pith:2021:HT4QYAMA2Z3SCY7O4NJQSYK3OY

not attested not anchored not stored refs pending

A Comparison of Circumgalactic MgII Absorption between the TNG50 Simulation and the MEGAFLOW Survey

Daniel DeFelippis, Dylan Nelson, Federico Marinacci, Greg L. Bryan, Lars Hernquist, Nicolas F. Bouch\'e, Shy Genel

arxiv:2102.08383 v2 · 2021-02-16 · 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{HT4QYAMA2Z3SCY7O4NJQSYK3OY}

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	2026-07-05T07:59:01.425220Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3cf90c0180d6772163eee35309615b762dcf985e5d29ae4c7e324f23d13fd034

Aliases

arxiv: 2102.08383 · arxiv_version: 2102.08383v2 · doi: 10.48550/arxiv.2102.08383 · pith_short_12: HT4QYAMA2Z3S · pith_short_16: HT4QYAMA2Z3SCY7O · pith_short_8: HT4QYAMA

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/HT4QYAMA2Z3SCY7O4NJQSYK3OY \
  | 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: 3cf90c0180d6772163eee35309615b762dcf985e5d29ae4c7e324f23d13fd034

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d0e012ed82f4c073e2cea83387544695bffe45f16e1fbb5eb581ca2437291b2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-02-16T19:00:00Z",
    "title_canon_sha256": "cecd5482c68bacaf5ca0ec84eec85de8a030fb9298184ca72e4fbec0096f7130"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.08383",
    "kind": "arxiv",
    "version": 2
  }
}