Pith Number

pith:M7CXJOBI

pith:2016:M7CXJOBIF4FADD4AY3HXRA7O6E

not attested not anchored not stored refs pending

The primordial deuterium abundance of the most metal-poor damped Lyman-alpha system

((1) University of California, (2) Institute of Astronomy, 3), (3) Kavli Institute for Cosmology, (4) San Diego State University, (5) Willamette University, 6), (6) Maria Mitchell Observatory), Kenneth M. Nollett (4), Max Pettini (2, Regina Jorgenson (5, Ryan Cooke (1), Santa Cruz, University of Cambridge

arxiv:1607.03900 v1 · 2016-07-13 · astro-ph.CO · astro-ph.GA · nucl-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{M7CXJOBIF4FADD4AY3HXRA7O6E}

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.

Cited by

1 paper in Pith

Bipartite Solution to the Lithium Problem

Receipt and verification

First computed	2026-05-18T01:01:23.161850Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

67c574b8282f0a018f80c6cf7883eef107d4b22f72e30bc3ccfc6116b8166b67

Aliases

arxiv: 1607.03900 · arxiv_version: 1607.03900v1 · doi: 10.48550/arxiv.1607.03900 · pith_short_12: M7CXJOBIF4FA · pith_short_16: M7CXJOBIF4FADD4A · pith_short_8: M7CXJOBI

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/M7CXJOBIF4FADD4AY3HXRA7O6E \
  | 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: 67c574b8282f0a018f80c6cf7883eef107d4b22f72e30bc3ccfc6116b8166b67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ce51c258ca15354359cc00194f969ff292fca42e83e6eb66af4c6a693d8ea20",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "nucl-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2016-07-13T20:00:02Z",
    "title_canon_sha256": "827b6305a462627d173268b63f6bf05ccb3801697a6482ed9cab9b22dae51f8b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.03900",
    "kind": "arxiv",
    "version": 1
  }
}