Pith Number

pith:KO6TNNXZ

pith:2015:KO6TNNXZTZE22H56PTEMPMC6WT

not attested not anchored not stored refs pending

Constraint on a varying proton-to-electron mass ratio from molecular hydrogen absorption toward quasar SDSS J123714.60+064759.5

(2) Centre for Astrophysics, Amsterdam, Astronomy, Australia), J. Bagdonaite (1), LaserLaB, M. Dapr\`a (1), Melbourne, M. T. Murphy (2), Supercomputing, Swinburne University of Technology, The Netherlands, VU University, W. Ubachs (1) ((1) Department of Physics

arxiv:1508.07419 v1 · 2015-08-29 · 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{KO6TNNXZTZE22H56PTEMPMC6WT}

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	2026-05-18T01:31:31.051684Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53bd36b6f99e49ad1fbe7cc8c7b05eb4dbdcd9089a94477c1f4164034fdab393

Aliases

arxiv: 1508.07419 · arxiv_version: 1508.07419v1 · doi: 10.48550/arxiv.1508.07419 · pith_short_12: KO6TNNXZTZE2 · pith_short_16: KO6TNNXZTZE22H56 · pith_short_8: KO6TNNXZ

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/KO6TNNXZTZE22H56PTEMPMC6WT \
  | 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: 53bd36b6f99e49ad1fbe7cc8c7b05eb4dbdcd9089a94477c1f4164034fdab393

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c44557af2e0c672e57078bf4551dd9e5f105f61d8b02a156905e03b27aa36f18",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2015-08-29T08:47:52Z",
    "title_canon_sha256": "35169f67b28e01dfa93546fceb6280c5210e6602092863ee4a41d10ec4ad1c63"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.07419",
    "kind": "arxiv",
    "version": 1
  }
}