Pith Number

pith:7VO4UM4P

pith:2018:7VO4UM4PN64MOGYTFIK2MG2VCL

not attested not anchored not stored refs pending

ALMA Observations of the Solar Chromosphere on the Polar Limb

Haruhisa Iijima, Masumi Shimojo, Takaaki Yokoyama, Takenori J. Okamoto

arxiv:1807.01411 v1 · 2018-07-04 · 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{7VO4UM4PN64MOGYTFIK2MG2VCL}

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	2026-05-18T00:07:33.854007Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd5dca338f6fb8c71b132a15a61b5512ece406f0c0f4e25f24c3b25d6b40f28d

Aliases

arxiv: 1807.01411 · arxiv_version: 1807.01411v1 · doi: 10.48550/arxiv.1807.01411 · pith_short_12: 7VO4UM4PN64M · pith_short_16: 7VO4UM4PN64MOGYT · pith_short_8: 7VO4UM4P

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/7VO4UM4PN64MOGYTFIK2MG2VCL \
  | 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: fd5dca338f6fb8c71b132a15a61b5512ece406f0c0f4e25f24c3b25d6b40f28d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5bee546eb214b6523c4f73bc7cc2ecbddac59fd44c00a9b9ca98474ffbc0f07",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-07-04T00:42:28Z",
    "title_canon_sha256": "d95b86262096c2f7d39d043b0b1c4d6e1e5420d66f44591ae541cfc974d1b108"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.01411",
    "kind": "arxiv",
    "version": 1
  }
}