Pith Number

pith:KFFT3Z33

pith:2017:KFFT3Z33F37Q5ASJBQIEDVQABD

not attested not anchored not stored refs pending

Testing the variability of the proton-to-electron mass ratio from observations of methanol in the dark cloud core L1498

A. V. Lapinov, C. Henkel, H. L. Bethlem, K. M. Menten, M. Dapr\`a, S. A. Levshakov, S. Leurini, S. Muller, W. Ubachs

arxiv:1709.03103 v1 · 2017-09-10 · 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{KFFT3Z33F37Q5ASJBQIEDVQABD}

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	2026-05-18T00:32:38.992156Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

514b3de77b2eff0e82490c1041d60008e29db7c6d1c69db447c5256c89a2cfd8

Aliases

arxiv: 1709.03103 · arxiv_version: 1709.03103v1 · doi: 10.48550/arxiv.1709.03103 · pith_short_12: KFFT3Z33F37Q · pith_short_16: KFFT3Z33F37Q5ASJ · pith_short_8: KFFT3Z33

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/KFFT3Z33F37Q5ASJBQIEDVQABD \
  | 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: 514b3de77b2eff0e82490c1041d60008e29db7c6d1c69db447c5256c89a2cfd8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58b5aad5bb7e57860ccb179adbe4028bab1d417be015473db03e7756c7ce4f70",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2017-09-10T14:11:32Z",
    "title_canon_sha256": "d6f4a159489f712d6d5004226cff8d2eca348ecc2d41b0aeb2b511835a33621d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.03103",
    "kind": "arxiv",
    "version": 1
  }
}