Instruction

Offline Deal

Prepare files for Offline Deal

https://docs.filecoin.io/store/lotus/very-large-files/#maximizing-storage-per-sector

Generate a unique piece CID

Use the Lotus client to generate a CAR file of the input without importing:

lotus client generate-car <inputPath> <outputPath>

Use the Lotus client to generate the piece CID:

lotus client commP <inputCarFilePath>

Use the Lotus client to generate the data CID:

lotus client import <inputCarFilePath>

Propose an offline deal

lotus client deal --start-epoch <current_epoch+11640> --manual-piece-cid=CID --manual-piece-size=datasize <Data CID> <miner> <price> <duration>

The default start epoch is the 49 hours after you publish the deal, so it is current_epoch +5880

We recommand you using 4 days for us prepare import for you, so it should be current_epoch+(24*4+1)602 = current_epoch+11640

Prepare CSV for Offline Sealing

Prepare the https://github.com/nebulaai/trusted-miner/blob/main/import_deal_template.csv with the data. You can upload a CSV with no deal id first, to enbale miner downloading first.The re-upload it again after the downlownding car file completed. For fields you don't know, please add the '', e.g. f019104,bafy2bzacebikhvpxget3hz55jno74llgv7nmohu4jdl2r2n6onlynqq7jh3v6,https://www.download.com/test.car,,343612 if you do not have the md5 at the moment.

There are two ways of uploading files:

• One-stage Upload Complete step Generate a unique piece CID, Propose an offline deal, Prepare CSV for Offline Sealing

  • upload the csv with deal_cid

• Two-stage Upload

  • stage1: Complete step Generate a unique piece CID , upload the csv with deal_id empty
  • stage2: Complete step Prepare CSV for Offline Sealing, re-upload the csv with deal_id

miner_id(mandatory) : miner you want to send the deal

file_source_url(mandatory): remote URL for download car

md5 (optional): md5sum used to verify the integrity of files

start_epoch(mandatory): the epoch of the deal start

deal_cid(mandatory if choose one-stage upload): Deal_id you need for sending, if you decide using two steps upload you can keep this field empty for the first time, and reuploaded for the 2nd time.

Upload CSV for Offline Sealing

Send the CSV file with the following format https://github.com/nebulaai/trusted-miner/blob/main/import_deal_template.csv to us via [email protected]

Note: md5 is optional, but it will good for you when retriving deals

For miners accept deals

A list of trusted miners by region

NBFS Canada get 5Tb Datacap from Filecoin plus project. As orgnizatin located in North America, NBFS would like to allocate the data to miners in NA and EU.

Please add a pull request to trusted_miner.csv so we can add you to our next sending list.

Thanks.