Pith Number

pith:3O77TPI7

pith:2012:3O77TPI7SLPQTYSHG7YD4KBVZB

not attested not anchored not stored refs pending

A Laser Frequency Comb System for Absolute Calibration of the VTT Echelle Spectrograph

H.-P. Doerr, R. Holzwarth, T. Kentischer und W. Schmidt, T. Steinmetz

arxiv:1204.0948 v1 · 2012-04-04 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3O77TPI7SLPQTYSHG7YD4KBVZB}

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	2026-05-18T03:58:37.362517Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dbbff9bd1f92df09e24737f03e2835c8667064f379451768b0ec6f5a9db2b377

Aliases

arxiv: 1204.0948 · arxiv_version: 1204.0948v1 · doi: 10.48550/arxiv.1204.0948 · pith_short_12: 3O77TPI7SLPQ · pith_short_16: 3O77TPI7SLPQTYSH · pith_short_8: 3O77TPI7

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/3O77TPI7SLPQTYSHG7YD4KBVZB \
  | 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: dbbff9bd1f92df09e24737f03e2835c8667064f379451768b0ec6f5a9db2b377

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8d003a73b3fcf05019097e51df488e0131b8e4a4b2d1b78dba040dff2de0b184",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-04-04T13:49:14Z",
    "title_canon_sha256": "028905a73d5cf5f0e5004359b403e0caecfdc145bb9148dc39e2bd7a21c23f7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.0948",
    "kind": "arxiv",
    "version": 1
  }
}