Pith Number

pith:AYAJ3B3T

pith:2025:AYAJ3B3TXQKFK2R6QPUNVWTHND

not attested not anchored not stored refs pending

The Peekaboo galaxy: new SALT spectroscopy and implications of archive HST data

2, (2) Southern African Large Telescope Foundation, 3), (3) SAI of MSU, (4) Special Astrophysical Observatory of RAS), Alexei Kniazev (1, Simon Pustilnik (4) ((1) South African Astronomical Observatory

arxiv:2505.16006 v2 · 2025-05-21 · 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{AYAJ3B3TXQKFK2R6QPUNVWTHND}

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	2026-07-05T11:23:10.966636Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06009d8773bc14556a3e83e8dada6768d388cbc0e7d03231536eb6817a0e66fd

Aliases

arxiv: 2505.16006 · arxiv_version: 2505.16006v2 · doi: 10.48550/arxiv.2505.16006 · pith_short_12: AYAJ3B3TXQKF · pith_short_16: AYAJ3B3TXQKFK2R6 · pith_short_8: AYAJ3B3T

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/AYAJ3B3TXQKFK2R6QPUNVWTHND \
  | 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: 06009d8773bc14556a3e83e8dada6768d388cbc0e7d03231536eb6817a0e66fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f95bf452e55bfa4aec765d71321921c61576f4a206bbd5f6ff7049ffc5bfd2f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2025-05-21T20:47:01Z",
    "title_canon_sha256": "d193bbaf5d51484fa138375180a5f3126f37621e8adf6914c0b1442151f7d86c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.16006",
    "kind": "arxiv",
    "version": 2
  }
}