MultiChain Developer Q&A - Recent questions tagged storage-blockchain-mediafile

File Handling Question

Wed, 05 Nov 2025 16:34:15 +0000

What is the best way to store files or should we really store file on the blockchain? if not, what are the best practices?

we have change to version MC 1.0.5, still the chain stops on it own

Wed, 18 Jul 2018 12:13:16 +0000

Hi we have moved to older stable

1\) still as we crunch a file of 1.5 mb it stops the chain, we have to restart the chain again.

we have changed the params setting for 6 MB file.

2) Blocks are stuck at 133 blocks since the first breakdown, after restarting the chain the block count is not increasing.

"version" : "1.0.5",
    "nodeversion" : 10005901,
    "protocolversion" : 10011,
    "chainname" : "dibs",
    "description" : "MultiChain dibs",
    "protocol" : "multichain",
    "port" : 6733,
    "setupblocks" : 60,
    "nodeaddress" : "dibs@172.31.25.41:6733",
    "burnaddress" : "1XXXXXXWvXXXXXXX9vXXXXXXTrXXXXXXakkvdH",
    "incomingpaused" : false,
    "miningpaused" : false,
    "walletversion" : 60000,
    "balance" : 0.00000000,
    "walletdbversion" : 2,
    "reindex" : false,
    "blocks" : 133,
    "timeoffset" : 0,
    "connections" : 0,
    "proxy" : "",
    "difficulty" : 0.00000006,
    "testnet" : false,
    "keypoololdest" : 1531915340,
    "keypoolsize" : 2,
    "paytxfee" : 0.00000000,
    "relayfee" : 0.00000000,
    "errors" : ""

uploading and retrieval of file from MC2.0 Alpha 3

Thu, 28 Jun 2018 19:02:47 +0000

Hi we are using multichain 2.0 alpha 3 version, as explained three parameters have been changed, we are able to crunch file upto 2 MB now, but while verifying/ retriving the file from streams, the values turn to be NULL, Pl help where are we wrong

in am not been able to find maxshowndata & gettxoutdata

{
"chain-protocol" : "multichain",
"chain-description" : "MultiChain chain1",
"root-stream-name" : "root",
"root-stream-open" : true,
"chain-is-testnet" : false,
"target-block-time" : 15,
"maximum-block-size" : 20097500,
"maximum-chunk-size" : 1048576,
"maximum-chunk-count" : 1024,
"default-network-port" : 9731,
"default-rpc-port" : 9730,
"anyone-can-connect" : false,
"anyone-can-send" : false,
"anyone-can-receive" : false,
"anyone-can-receive-empty" : true,
"anyone-can-create" : false,
"anyone-can-issue" : false,
"anyone-can-mine" : false,
"anyone-can-activate" : false,
"anyone-can-admin" : false,
"support-miner-precheck" : true,
"allow-arbitrary-outputs" : false,
"allow-p2sh-outputs" : true,
"allow-multisig-outputs" : true,
"setup-first-blocks" : 60,
"mining-diversity" : 0.300000000001,
"admin-consensus-upgrade" : 0.500000000001,
"admin-consensus-admin" : 0.500000000001,
"admin-consensus-activate" : 0.500000000001,
"admin-consensus-mine" : 0.500000000001,
"admin-consensus-create" : 1e-12,
"admin-consensus-issue" : 1e-12,
"lock-admin-mine-rounds" : 10,
"mining-requires-peers" : true,
"mine-empty-rounds" : 10.000000000001,
"mining-turnover" : 0.500000000001,
"first-block-reward" : -1,
"initial-block-reward" : 0,
"reward-halving-interval" : 52560000,
"reward-spendable-delay" : 1,
"minimum-per-output" : 0,
"maximum-per-output" : 100000000000000,
"minimum-offchain-fee" : 0,
"minimum-relay-fee" : 0,
"native-currency-multiple" : 100000000,
"skip-pow-check" : false,
"pow-minimum-bits" : 8,
"target-adjust-freq" : -1,
"allow-min-difficulty-blocks" : false,
"only-accept-std-txs" : true,
"max-std-tx-size" : 20097500,
"max-std-op-returns-count" : 32,
"max-std-op-return-size" : 20097152,
"max-std-op-drops-count" : 5,
"max-std-element-size" : 40000,
"chain-name" : "chain1",
"protocol-version" : 20003,
"network-message-start" : "f8e4f7ed",
"address-pubkeyhash-version" : "00a3a284",
"address-scripthash-version" : "0580bcad",
"private-key-version" : "801d6d29",
"address-checksum-value" : "c8835e5c",
"genesis-pubkey" : "034475839d78341a573659ab10ea846b568dacd5a3de19f379fb8c8855ded0170f",
"genesis-version" : 1,
"genesis-timestamp" : 1530198132,
"genesis-nbits" : 536936447,

What is the point of Decentralized storage

Tue, 22 May 2018 02:29:06 +0000

I seriously didn't get the point of decentralized storage,

Servers are providing free cheaper services to store cloud data and storj sia or IPFS(using hastable a little different from other 2) provides data storage where data is storing in multiple nodes(4 to 5 or more copies for better retrievability) in multiple parts, Is this not storage wasting?

On servers data might be stored in 1 or 2 copies as Backup but 4,5 or more copies in the name of Blockchain where miners are not ever getting paid in good amount for how much free storage units setting on rent and may leave it with destroying whole data that stored on there node and also no retrievability guarantee,

Is this a durable concept? Please tell your review...

Best way to store 20GB files on multichain?

Thu, 14 Sep 2017 20:18:54 +0000

Hello!

I am working on a use-case where we we intend to compress and store files (average size is 20GB each) onto the multichain blockchain.

I have read that I need to split this up into smaller transactions of 64mb each (that is the max transaction size for streams).

I have also heard that putting large files like this onto multichain, and then later retrieving them will cause multichain to crash. Is this true?

Questions:

- What is the best way to store multiple 20gb+ files on the blockchain/

- Will putting large files on the blockchain, and then later retrieveing them cause the multichain to crash?

Thanks

Storing media file in Blockchain

Mon, 26 Jun 2017 09:21:45 +0000

Hi,

Please I will like to find out about the possibilities of storing a media file on blockchain, the cost and organizations that renders this service, thank you.

Regards