Pith Number

pith:SO7BO6RG

pith:2012:SO7BO6RG37DBCS5MHFNMAGNLNR

not attested not anchored not stored refs pending

Understanding hydrogen recombination line observations with ALMA and EVLA

Cornelis P. Dullemond, Steven N. Longmore, Thomas Peters

arxiv:1206.7041 v1 · 2012-06-29 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SO7BO6RG37DBCS5MHFNMAGNLNR}

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	2026-05-18T03:46:30.711073Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93be177a26dfc6114bac395ac019ab6c40b5bf4782e3b92b1b7516ec4b9116ca

Aliases

arxiv: 1206.7041 · arxiv_version: 1206.7041v1 · doi: 10.48550/arxiv.1206.7041 · pith_short_12: SO7BO6RG37DB · pith_short_16: SO7BO6RG37DBCS5M · pith_short_8: SO7BO6RG

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/SO7BO6RG37DBCS5MHFNMAGNLNR \
  | 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: 93be177a26dfc6114bac395ac019ab6c40b5bf4782e3b92b1b7516ec4b9116ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de0ff4d544737bad41a17bd2245df59cda75b01bb1a81b9a1b2ea242f1ad5dcb",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-06-29T14:48:42Z",
    "title_canon_sha256": "dbe1376abda6052991c02f1dfe1b9e0542047877c2c5096b243dfef07b623b0a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.7041",
    "kind": "arxiv",
    "version": 1
  }
}