Pith Number

pith:W7QTHOJP

pith:2015:W7QTHOJPPCKJRFKY6WHZGBIQY6

not attested not anchored not stored refs pending

Internal structure of spiral arms traced with [CII]: Unraveling the WIM, HI, and molecular emission lanes

J. L. Pineda, P. F. Goldsmith, T. Velusamy, W. D. Langer

arxiv:1504.03373 v1 · 2015-04-13 · 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{W7QTHOJPPCKJRFKY6WHZGBIQY6}

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	2026-05-18T02:18:58.001306Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7e133b92f7894989558f58f930510c79cb4bb94afa5785f43c147b6b32c462b

Aliases

arxiv: 1504.03373 · arxiv_version: 1504.03373v1 · doi: 10.48550/arxiv.1504.03373 · pith_short_12: W7QTHOJPPCKJ · pith_short_16: W7QTHOJPPCKJRFKY · pith_short_8: W7QTHOJP

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/W7QTHOJPPCKJRFKY6WHZGBIQY6 \
  | 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: b7e133b92f7894989558f58f930510c79cb4bb94afa5785f43c147b6b32c462b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22a8d226a5cab01f0a58fc2a1f2c06c16b49215ec4acd235b833527a15eb5ba9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-04-13T21:57:50Z",
    "title_canon_sha256": "d85f0e389f78c9133f4fdcc78d06c3658ac8f430c288d3274748a194f487606f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.03373",
    "kind": "arxiv",
    "version": 1
  }
}