Pith Number

pith:7R6NIXWO

pith:2016:7R6NIXWOK7G3Z5O3EGBIIP4NY5

not attested not anchored not stored refs pending

What are the megahertz peaked-spectrum sources?

(2) Department of Physics, 3), (3) Netherlands Institute for Radio Astronomy (ASTRON), 4, (4) Leiden Observatory, (5) Joint Institute for VLBI ERIC, (6) School of Physics, (7) FOMI Satellite Geodetic Observatory, 8), (8) Department of Astrodynamics, Astronomy, Cornelia Muller (1), David Cseh (1), Delft University of Technology), Elmar G. Kording (1) ((1) Department of Astrophysics/IMAPP, Heino Falcke (1, Huib T. Intema (4), Leiden University, Leonid I. Gurvits (5, Mathematics, Radboud University Nijmegen, Rocco Coppejans (1), Sandor Frey (7), Sjoert van Velzen (2), Space Missions, The Johns Hopkins University, University of Hertfordshire, Wendy L. Williams (6, Zsolt Paragi (5)

arxiv:1604.00171 v1 · 2016-04-01 · astro-ph.GA · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7R6NIXWOK7G3Z5O3EGBIIP4NY5}

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	2026-05-18T01:13:11.314637Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc7cd45ece57cdbcf5db2182843f8dc774aac00c949422413166d66230f45f41

Aliases

arxiv: 1604.00171 · arxiv_version: 1604.00171v1 · doi: 10.48550/arxiv.1604.00171 · pith_short_12: 7R6NIXWOK7G3 · pith_short_16: 7R6NIXWOK7G3Z5O3 · pith_short_8: 7R6NIXWO

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/7R6NIXWOK7G3Z5O3EGBIIP4NY5 \
  | 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: fc7cd45ece57cdbcf5db2182843f8dc774aac00c949422413166d66230f45f41

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f352fde04dd3bc9de5486e93ae6fa73eea2fad4bb208944ca06194582a9947a",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-04-01T09:12:05Z",
    "title_canon_sha256": "8ec8d61dcf7be5433d126de7db02083c9fb75ddcd7b71b867806676a768fb21c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.00171",
    "kind": "arxiv",
    "version": 1
  }
}