Distributed cryptographic system to archive data comprising a multiplicity of sets of blockchains, wherein said multiplicity of sets of blockchains comprises at least one first set of blockchains and at least one second set of blockchains, wherein said at least one first set of blockchains comprises at least one control blockchain and at least one autonomous data blockchain, wherein said at least one second set of blockchains comprises at least one control blockchain, wherein each of said at least one control blockchains comprises a series of control blocks, a series of cryptographic control links linking in series and chronological order said control blocks, wherein said at least one autonomous data blockchain comprises a series of blocks, a series of cryptographic link pairs linking in series and chronological order said blocks, wherein each block of said series of blocks comprises titling data comprising at least one index and at least one time stamp, a data archive, a first status of the data archive and a second status of the data archive, wherein said first status indicates that said data archive comprises at least one archived data and a validity period relevant to said at least one archived data, wherein said second status indicates that said data archive is empty, wherein said series of blocks comprises at least one previous block and at least one following block which is more recent than said previous block, wherein said at least one previous block and said at least one following block are contiguous blocks (41, 42) of the series of blocks, wherein said contiguous blocks (41, 42) are linked with each other by a pair of cryptographic links of said series of pairs of cryptographic links, wherein said pair of cryptographic links comprises a first cryptographic link and a second cryptographic link, wherein said first cryptographic link links the first status of the previous block with the first status of the following block, wherein said second cryptographic link links the second status of the previous block with the second status of the following block or links the second status of the previous block with the first status of the following block, wherein each set of blockchains provides that at least one control block of said at least one control blockchain is linked with at least one block of said at least one autonomous data blockchain by an inter-blockchain cryptographic link, wherein at least one control block of said at least one control blockchain of said at least one first set of blockchains is linked with said at least one control block of said at least one control blockchain of said at least one second set of blockchains by an inter-blockchain cryptographic link. wherein said multiplicity of sets of blockchains comprises at least one first set of blockchains and at least one second set of blockchains, wherein said at least one first set of blockchains comprises at least one control blockchain and at least one autonomous data blockchain, wherein said at least one second set of blockchains comprises at least one control blockchain, wherein each of said at least one control blockchains comprises a series of control blocks, a series of cryptographic control links linking in series and chronological order said control blocks, wherein said at least one autonomous data blockchain comprises a series of blocks, a series of cryptographic link pairs linking in series and chronological order said blocks, wherein each block of said series of blocks comprises titling data comprising at least one index and at least one time stamp, a data archive, a first status of the data archive and a second status of the data archive, wherein said first status indicates that said data archive comprises at least one archived data and a validity period relevant to said at least one archived data, wherein said second status indicates that said data archive is empty, wherein said series of blocks comprises at least one previous block and at least one following block which is more recent than said previous block, wherein said at least one previous block and said at least one following block are contiguous blocks (41, 42) of the series of blocks, wherein said contiguous blocks (41, 42) are linked with each other by a pair of cryptographic links of said series of pairs of cryptographic links, wherein said pair of cryptographic links comprises a first cryptographic link and a second cryptographic link, wherein said first cryptographic link links the first status of the previous block with the first status of the following block, wherein said second cryptographic link links the second status of the previous block with the second status of the following block or links the second status of the previous block with the first status of the following block, wherein each set of blockchains provides that at least one control block of said at least one control blockchain is linked with at least one block of said at least one autonomous data blockchain by an inter-blockchain cryptographic link, wherein at least one control block of said at least one control blockchain of said at least one first set of blockchains is linked with said at least one control block of said at least one control blockchain of said at least one second set of blockchains by an inter-blockchain cryptographic link.