Pith Number

pith:5MHFKNQA

pith:2022:5MHFKNQAHI3Y23FZOCQLUZUBNS

not attested not anchored not stored refs pending

The Supersonic Project: The Early Evolutionary Path of SIGOs

Blakesley Burkhart, Claire E. Williams, Federico Marinacci, Gen Chiaki, Mark Vogelsberger, Naoki Yoshida, Smadar Naoz, William Lake, Yeou S. Chiou, Yurina Nakazato

arxiv:2208.05987 v4 · 2022-08-11 · 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{5MHFKNQAHI3Y23FZOCQLUZUBNS}

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	2026-07-05T05:57:55.686120Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb0e5536003a378d6cb970a0ba66816c8852c9845b11aabdca69c269dfa7445c

Aliases

arxiv: 2208.05987 · arxiv_version: 2208.05987v4 · doi: 10.48550/arxiv.2208.05987 · pith_short_12: 5MHFKNQAHI3Y · pith_short_16: 5MHFKNQAHI3Y23FZ · pith_short_8: 5MHFKNQA

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/5MHFKNQAHI3Y23FZOCQLUZUBNS \
  | 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: eb0e5536003a378d6cb970a0ba66816c8852c9845b11aabdca69c269dfa7445c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5a938ffb08ab0fdc6e1ccccf030ecdae7da3781ea27d916cbd0fc8daac7fa02e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2022-08-11T18:00:06Z",
    "title_canon_sha256": "1c7ee8562ca49dad6b3166b99b7f85a9d005e9cdbeacaf7439aaf47cccc50c2d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2208.05987",
    "kind": "arxiv",
    "version": 4
  }
}