Pith Number

pith:A7AH2TTU

pith:2015:A7AH2TTUC6ABA4EVBKDU53LTUE

not attested not anchored not stored refs pending

Extracting Radial Velocities of A- and B-type Stars from Echelle Spectrograph Calibration Spectra

Andrew Vanderburg, John Asher Johnson, Juliette C. Becker, Timothy D. Morton

arxiv:1503.03874 v1 · 2015-03-12 · astro-ph.SR · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A7AH2TTUC6ABA4EVBKDU53LTUE}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:40:52.306359Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07c07d4e7417801070950a874eed73a13fb47f4805e15ece434b984b3d78c90e

Aliases

arxiv: 1503.03874 · arxiv_version: 1503.03874v1 · doi: 10.48550/arxiv.1503.03874 · pith_short_12: A7AH2TTUC6AB · pith_short_16: A7AH2TTUC6ABA4EV · pith_short_8: A7AH2TTU

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/A7AH2TTUC6ABA4EVBKDU53LTUE \
  | 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: 07c07d4e7417801070950a874eed73a13fb47f4805e15ece434b984b3d78c90e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3269a8b453840a7b3e836f2cc91d0124be920e3ceada8a1486507a005606eee9",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-03-12T20:00:44Z",
    "title_canon_sha256": "fb3fabf9ab37465e6bbae7b945375f991981c15150bb20dbf46946f701610280"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.03874",
    "kind": "arxiv",
    "version": 1
  }
}