Pith Number

pith:HZVMU42K

pith:2015:HZVMU42K7MVQS7GBOYDN6RW4LL

not attested not anchored not stored refs pending

First measurement of HI 21cm emission from a GRB host galaxy indicates a post-merger system

Martin Zwaan, Maryam Arabsalmani, Micha{\l} J. Micha{\l}owski, Nissim Kanekar, Sambit Roychowdhury

arxiv:1508.03342 v1 · 2015-08-13 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HZVMU42K7MVQS7GBOYDN6RW4LL}

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	2026-05-18T01:30:57.882595Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e6aca734afb2b097cc17606df46dc5af8d4f63b5cdcdfa5da55afd096fe61ce

Aliases

arxiv: 1508.03342 · arxiv_version: 1508.03342v1 · doi: 10.48550/arxiv.1508.03342 · pith_short_12: HZVMU42K7MVQ · pith_short_16: HZVMU42K7MVQS7GB · pith_short_8: HZVMU42K

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/HZVMU42K7MVQS7GBOYDN6RW4LL \
  | 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: 3e6aca734afb2b097cc17606df46dc5af8d4f63b5cdcdfa5da55afd096fe61ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9a74c5708bba1970c4c6c99c33fda7ffcc1aec2ab3d0bc0fe478c85d96edd55",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-08-13T20:10:12Z",
    "title_canon_sha256": "20e2155b0643294656db651b10467bf217ddac78cd1bdc4441513a577b97cba0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.03342",
    "kind": "arxiv",
    "version": 1
  }
}