Pith Number

pith:B7UMUH2E

pith:2013:B7UMUH2EZR6MXO44OWJTHKO7M3

not attested not anchored not stored refs pending

A CO J=3-2 map of M51 with HARP-B: Radial properties of the spiral structure

C. Vlahakis, F. P. Israel, P. van der Werf, R. P. J. Tilanus

arxiv:1304.7408 v1 · 2013-04-27 · astro-ph.CO · 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{B7UMUH2EZR6MXO44OWJTHKO7M3}

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	2026-05-18T01:50:21.017249Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0fe8ca1f44cc7ccbbb9c759333a9df66f2b292237baeff1f18b1102136cfa903

Aliases

arxiv: 1304.7408 · arxiv_version: 1304.7408v1 · doi: 10.48550/arxiv.1304.7408 · pith_short_12: B7UMUH2EZR6M · pith_short_16: B7UMUH2EZR6MXO44 · pith_short_8: B7UMUH2E

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/B7UMUH2EZR6MXO44OWJTHKO7M3 \
  | 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: 0fe8ca1f44cc7ccbbb9c759333a9df66f2b292237baeff1f18b1102136cfa903

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a2c988402f8bd91000b8311ea782c5e16926a24177e73fae6fd2548f295475a",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-04-27T21:30:16Z",
    "title_canon_sha256": "5751de5acd474ae8573446591e12f9098f8e864584431e06ffd5ebfdc44b8dc6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.7408",
    "kind": "arxiv",
    "version": 1
  }
}