Pith Number

pith:PYSXQFF3

pith:2015:PYSXQFF3LQPGPYA7NVYW7QOFSK

not attested not anchored not stored refs pending

Sensitive 21cm Observations of Neutral Hydrogen in the Local Group near M31

D.J. Pisano, Felix J. Lockman, Spencer A. Wolfe

arxiv:1507.05237 v2 · 2015-07-19 · 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{PYSXQFF3LQPGPYA7NVYW7QOFSK}

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	2026-05-18T01:22:01.242799Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e257814bb5c1e67e01f6d716fc1c5929776de3a1838535598da29004ec7c025

Aliases

arxiv: 1507.05237 · arxiv_version: 1507.05237v2 · doi: 10.48550/arxiv.1507.05237 · pith_short_12: PYSXQFF3LQPG · pith_short_16: PYSXQFF3LQPGPYA7 · pith_short_8: PYSXQFF3

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/PYSXQFF3LQPGPYA7NVYW7QOFSK \
  | 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: 7e257814bb5c1e67e01f6d716fc1c5929776de3a1838535598da29004ec7c025

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7e4b9e00e76a3062e915ec73e6ba85b059fb6b7963854fa9c0d929a2a7f309a9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-07-19T01:11:19Z",
    "title_canon_sha256": "f20a0ac1986aa8031dbe1133cef4c2ddbdde49f33c46cdcb87979b81e1f8aec5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.05237",
    "kind": "arxiv",
    "version": 2
  }
}