Pith Number

pith:63VBKW6L

pith:2019:63VBKW6LBVYJRIEXKQIB5FNOBY

not attested not anchored not stored refs pending

Automatic Echelle Spectrograph Wavelength Calibration

C. McCully, G. M. Brandt, T. D. Brandt

arxiv:1910.08079 v2 · 2019-10-17 · astro-ph.IM · astro-ph.EP · 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{63VBKW6LBVYJRIEXKQIB5FNOBY}

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	2026-07-05T01:12:25.434588Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6ea155bcb0d7098a09754101e95ae0e075109a325add7672c4ad88431c71f99

Aliases

arxiv: 1910.08079 · arxiv_version: 1910.08079v2 · doi: 10.48550/arxiv.1910.08079 · pith_short_12: 63VBKW6LBVYJ · pith_short_16: 63VBKW6LBVYJRIEX · pith_short_8: 63VBKW6L

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/63VBKW6LBVYJRIEXKQIB5FNOBY \
  | 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: f6ea155bcb0d7098a09754101e95ae0e075109a325add7672c4ad88431c71f99

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ffaff92a7b934856c4ea51ddb037bd8dbc5448507a98fe9b8019f4815727fc33",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-10-17T18:00:00Z",
    "title_canon_sha256": "47f8fea9183617f5cb3361f6da9895fb195601694207116b6af36e87b85e015d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.08079",
    "kind": "arxiv",
    "version": 2
  }
}