Pith Number

pith:7VLML77H

pith:2017:7VLML77HTPTN4VCVIICS6VAHGF

not attested not anchored not stored refs pending

On the methanol emission detection in the TW Hya disc: the role of grain surface chemistry and non-LTE excitation

A. M. Sobolev, A. S. Shapovalova, D. A. Semenov, R. Teague, S. Yu. Parfenov, Th. Henning

arxiv:1703.03748 v1 · 2017-03-10 · astro-ph.SR · astro-ph.GA

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

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	2026-05-18T00:48:53.061777Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd56c5ffe79be6de545542052f5407314986c2e56a648dc117985afbec4e3a08

Aliases

arxiv: 1703.03748 · arxiv_version: 1703.03748v1 · doi: 10.48550/arxiv.1703.03748 · pith_short_12: 7VLML77HTPTN · pith_short_16: 7VLML77HTPTN4VCV · pith_short_8: 7VLML77H

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/7VLML77HTPTN4VCVIICS6VAHGF \
  | 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: fd56c5ffe79be6de545542052f5407314986c2e56a648dc117985afbec4e3a08

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "34b19a179cfa94f739fb9dbd6710e8440e60440d5e59a4e4e605077ffc747a71",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2017-03-10T16:25:43Z",
    "title_canon_sha256": "9afb735ac756f04e598808c9e7454cfcca0f3733324404989ca3f8c17f4850eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.03748",
    "kind": "arxiv",
    "version": 1
  }
}